bluuebunny/crossref_metadata_2025 huggingface dataset:
Penetapan kadar flavonoid total ekstrak kayu raru (Cotylelobium lanceolatum Craib) berdasarkan perbedaan konsentrasi etanol dengan metode spektrofotometri Uv-Vis
Authors: Natasya Elma , Daulay Anny Sartika , Ridwanto Ridwanto , Rahayu Yayuk Putri
Published: November 2023

Pemanfaatan tumbuhan obat tradisional untuk penyembuhan, merupakan bentuk pengobatan tertua di dunia. Salah satu tanaman yang mempunyai banyak manfaat dan mengandung kandungan senyawa metabolit sekunder yaitu kulit kayu raru (Cotylelobium lanceolatum Craib) yang digunakan sebagai salah satu obat obat tradisional untuk penyakit seperti malaria, diare, serta diabetes. Penelitian ini bertujuan untuk mengetahui golongan senyawa apa saja yang terkandung dalam ekstrak kulit kayu raru dan untuk mengetahui nilai kadar flavonoid total yang terdapat pada ekstrak kulit kayu raru dalam berbagai perbedaan konsentrasi etanol (96%, 70%, 50%). Tahapan penelitian ini meliputi pengolahan bahan tumbuhan, pembuatan ekstrak etanol ekstrak kayu raru, pemeriksaan karakterisasi, skrining fitokimia dan penetapan kadar flavonoid total ekstrak etanol kulit kayu raru. Ekstrak kulit kayu raru dibuat dengan metode maserasi dengan menggunakan etanol 96%, 70%, 50% kemudian ekstrak yang diperoleh dipekatkan dengan rotary evaporator, Selanjutnya dilakukan penetapan kadar flavonoid total berdasarkan perbedaan konsentrasi etanol dengan menggunakan metode spektrofotometri UV-Vis. Hasil penelitian menunjukkan bahwa ekstrak etanol kulit kayu raru mengandung senyawa alkaloid,flavonoid, saponin, tanin dan steroid. Penentuan kadar flavonoid total dengan menentukan panjang gelombang maksimum kuarsetin dan perhitungan dari kadar flavonoid total dengan metode spektrofotometri UV-Vis. Hasil dari penentuan kadar flavonoid total ekstrak etanol kulit kayu raru pada konsentrasi 96% yaitu 1,9915 ± 0,0139 mg QE/g, 70% yaitu 1,12492 ± 0,01532 mg QE/g, dan untuk 50% yaitu 0,95197 ± 0,01516 mg QE/g. Maka konsentrasi etanol yang paling baik menghasilkan kadar flavonoid adalah konsentrasi etanol 96% karena menghasilkan kadar yang lebih tinggi dari pada konsentrasi etanol lainnya.
Evaluation of Net-free Erosion Control Blankets
Authors:   University of Illinois Urbana-Champaign, Bhattarai Rabin , Zhang Yufan ,   University of Illinois Urbana-Champaign, Yao Owen ,   University of Illinois Urbana-Champaign
Published: November 2023

Erosion control blankets (ECBs) protect soil from being detached and transported by raindrops and subsequential overland runoff while assisting in vegetation growth. ECBs have several characteristics, for example, thickness, mass per unit area, tensile strength, elongation, water absorption, etc. However, the impact of these characteristics on the performance in mitigating erosion has yet to be well understood. To better understand the interactions of ECB properties with the detachment and transport of sediment, field tests were conducted at the Erosion Control Research and Training Center at the University of Illinois Urbana-Champaign. Various ECBs, including net-free ECBs and bionet ECBs, were tested on a 3H:1V hillslope under a 30-minute simulated rainfall event (2 in./hr). The soil used on the testing plot was silty clay loam. To investigate ECB effectiveness, total runoff volume, runoff start/end time, peak runoff rate, and sediment yield were monitored during each test. The results showed that water absorption played a big role in enhancing the performance of ECBs. The materials absorbed a large amount of water at the beginning and then acted as a wet film to cover the hillslope, reducing soil erosion by the overland flow when the soil was saturated. This wet film continued to reduce soil detachment, although it probably did not help with runoff reduction after saturation. Among the blankets tested, Profile F4 Netless was the most degradable and lightest one. North American Green DS75 had the most cost efficiency with $0.4 /sq. yd. There was no big difference in the installation method.
Mudanças no estilo de vida em crianças e adolescentes reduzem os riscos do desenvolvimento de diabetes mellitus tipo II
Authors: Silva Pedro , Roncholeta Luiza , Lima Lucas , Carvalho Isadora , Oliveira Iago , Comunian Yuri , Marini Danyelle Cristine
Published: November 2023

A diabetes mellitus tipo II é uma doença crônica com impactos cada vez mais prevalentes em crianças e adolescentes em todo o mundo. Fatores como a obesidade, dietas pouco saudáveis e a falta de atividade física são os principais fatores de risco para o desenvolvimento desta doença nessas faixas etárias. No entanto, estudos recentes têm mostrado que educação sobre a adoção de um estilo de vida saudável pode ajudar a reduzir significativamente o risco de desenvolver diabetes mellitus tipo II em crianças e adolescentes. Este artigo teve como objetivo avaliar se as mudanças no estilo de vida tiveram algum impacto no desenvolvimento de diabetes mellitus tipo II em crianças e adolescentes. Trata-se de uma revisão integrativa, a qual utilizou a seguinte pergunta PICO: “Como as mudanças no estilo de vida em crianças e adolescentes podem reduzir os riscos de desenvolver diabetes mellitus tipo II?”. Os descritores utilizados foram “Criança”, “Adolescente”, "Hábitos saudáveis", "Estilos de vida sedentários", "Estilo de vida saudável", “Estilo de vida” e “Diabetes mellitus tipo II”. As plataformas analisadas foram BVS, PUBMED e SCIELO, durante um período de 5 anos, entre 2018 e 2023, esses estudos foram lançados na plataforma Rayyan para que fossem analisados. Após a aplicação dos critérios de inclusão foram selecionados 6 estudos dos 137 encontrados na plataforma PUBMED, na BVS dos 143 resultados encontrados, 5 foram selecionados e na plataforma SCIELO foram encontrados 31 resultados, nenhum foi selecionado para análise. Foi concluído que essas mudanças incluem uma alimentação equilibrada e rica em nutrientes, além da prática regular de atividade física. Somente assim será possível reduzir a incidência de diabetes mellitus tipo II e melhorar a qualidade de vida dessas crianças e adolescentes.
Conhecendo os impactos pulmonares ocasionados pelo uso de cigarros eletrônicos
Authors: Leite André Matheus Carvalho Silva Leite , Prado Camila Dourado , Hemza Julia Lopes , Fernandes Paulo Eduardo Borges , Leite Caio Ferreira , Costa Thiago Reis Morais , Fernandes Luiz Eduardo Lima , Torres Thaís da Silva , Ponte Camyla dos Santos Costa , Wanderley Lilla Carvalho , Ferreira Raí Araújo Dourado , Oliveira Samira cristina pacheco de oliveira , Oliveira Silmara Pacheco , Pereira Isadora Laise
Published: November 2023

O presente trabalho tem por objetivo a análise dos impactos pulmonares que são ocasionados pelo uso de cigarros eletrônicos. Este trabalho trata-se de uma revisão integrativa, sendo realizada a partir da busca dos seguintes Descritores em Ciências da Saúde (DeCS) na base de dados PubMed: electronic; cigarette; lung; impacts. Dos artigos encontrados, foram selecionados apenas artigos publicados nos anos de 2021 a 2023 até a data de 25/10/2023, sendo escolhidos 18 artigos, em que 10 foram excluídos após a análise de enquadramento ao tema, sendo apenas 8 analisados para a confecção deste estudo. O uso de E-cigarros está relacionado a diversas alterações pulmonares, sendo que em 2019, nos Estados Unidos, foi responsável pelo surto de doença pulmonar associada a cigarros eletrônicos, além disso é capaz de induzir alterações como síndrome respiratória aguda grave, alterações na função e composição do surfactante alterando a hematose, tosse, falta de ar e dentre outras alterações. Com isto, é essencial que se faça um apanhado das principais evidências científicas acerca deste tema para que todas estas problemáticas sejam evidenciadas.
HISTORICAL AND CURRENT RESEARCH ON EDUCATIONAL TECHNOLOGY: Juggling Strictness and Significance to Influence Academic Achievement
Authors: Dr Syed Firoz Ahmad
Published: November 2023

The focus and significance of educational technology research have increased significantly in the modern era due to the exponential growth of technology utilization in education through applications like Internet access, simulations, educational games, and distant learning. In order to promote learning in schools, we look at both historical and contemporary research trends in this study, focusing on the function and value of research findings in guiding instructional methods and policy. The following specific subjects are covered in detail: (a) differing perspectives on what constitutes "effective" technology use in the classroom as research topics; (b) historical trends in research approaches and inquiry topics; (c) alternative research designs that strike a balance between internal (rigor) and external (relevance) validity; and (d) recommendations for future research directions. In addition to employing mixed-methods research to examine and comprehend technology applications in challenging real-life contexts, attention is paid to outlining several experimental designs as alternatives for attaining the proper rigor and relevance of study data.
KEYWORDS: Educational Technology, Learning, Research, Research Designs and Trends, Effect of Technology on Education
PEMBELAJARAN MENULIS PUISI DENGAN MENGGUNAKAN MODEL NATURE LEARNING KELAS X DI SMA SWASTA YAYASAN PERGURUAN KELUARGA PEMATANG SIANTAR
Authors: Nasution Annisa Juspi Amini , Netti Marini  , Resmi
Published: November 2023

Penelitian ini bertujuan untuk mengetahui pengaruh hasil pembelajaran menulis puisi dengan menggunakan model nature learning kelas x di SMA Swasta Yayasan Perguruan Keluarga Pematang Siantar. Metode penelitian yang digunakan adalah metode eksperimen dengan pendekatan kuantitatif. Sampel yang digunakan adalah random sampling. Teknik pengumpulan data pada penelitian ini adalah teknik tes berupa uraian yang meliputi pre-test (Tes Awal) dan post-test (Tes Akhir). Instrumen yang digunakan berupa tes kemampuan menulis puisi. Uji hipotesis uji –t diperoleh thitung = 7,61 pada taraf signifikan α = 0,005 dan derajat kebebasan (dk) = N – 2 atau 58 – 2 = 56, maka ttabel  2,003. Jadi ada pengaruh yang signifikan dari penelitian tentang Pembelajaran Menulis Puisi Dengan Menggunakan Model Nature Learning Kelas X Di SMA Swasta Yayasan Perguruan Keluarga Pematang Siantar.
Synergy of the creativity of Vira Chernienko
Authors: Sheretiuk Ruslana
Published: November 2023

The article examines the artistic and pedagogical achievements of modern Rivne artist Vira Chernienko, which is the first attempt of generalization of the factual material of this problem in Ukraine. The stages of her professional development are outlined, in particular a list of international and all-Ukrainian art events, in which she participated and also it is provided the information about her personal art exhibitions. It is indicated that the art of Vira Andriivna is one of the manifestations of the modern process of promoting ceramic in the spheres of fine art. It is shown, that the artist is extremely approaching to the realization of fine art tasks, because her works have a quite decorative, abstract character, on the first plan of which come out refined tonal and color comparisons, as well as textured effects. It is revealed Vira Chernienko’s gradual distancing from image-thematic and compositional-stylistic stereotypes of the past in interpretations of female images. It is emphasized, that their femininity reveals through passion, sensuality and sexuality. At the same time they are independent, have the potential of a powerful life-giving force. It creates the image of woman as the bosom of nature – the symbol of the fullness of human being.
It has been investigated, that her artistic activity Vira Chernienko combines with pedagogical, because more than 20 years she has realized herself effectively as a teacher of the department of fine and decorative art in Rivne State Humanitarian University. A number of students’ diploma theses, which are made under her leadership as a ceramic artist, is described. They attest the influence of Vira Chernienko’s school, namely the ability to reveal the latent artistic potential of ceramic, as well as the ability to create artistic images, which go out of the scope of decorative exploitation and belong to the high fine art.
It is emphasized, that perfect dominions of a wide spectrum of artistic possibilities of ceramic in combination with a deep interpretation of the surrounding reality and proper implementation of the tasks of the higher school of professional training of specialists in fine and decorative applied art create the effect of synergy of Vira Chernienko’s creativity.
REMOÇÃO DE FIBROMA DE CELULAS GIGANTES: UM RELATO DE CASO
Authors: Rosa Tamily dos Santos , Oliveira Bruna Bezerra Andrade de , Muniz Larissa Lafuente , Fecini Robson Aparecido
Published: November 2023

O fibroma de celulas gigantes é um lesão relativamente rara, e que clinicamente é semelhante a outras hiperplasias que se apresentam na cavidade oral. Geralmente, apresenta-se como nódulo séssil ou pendiculado, de crescimento lento e assintomático com a superficie nódular de 0,5 a 1 cm de diametro. A pesquisa contou com a participação de um paciente do sexo masculino, com 71 anos, melanoderma, tabagista e etilista. Na história médica pregressa o paciente relatou que não possui comorbidades e doenças sistêmicas diagnosticadas, mas possui o hábito parafuncional de mordiscar a região da lesão a aproximadamente onze anos. A importância do diagnóstico além de avaliar as características clínicas e histopatológicas da lesão, também foi analisado tais características como a distribuição etária, predileção de gênero, localização e etiologia da lesão. Este trabalho tem por objetivo relatar o caso de um fibroma de células gigantes em um paciente do sexo masculino com idade avançada, com a remoção excisional da lesão, que se encontra localizada próximo a comissura do lábio inferior esquerdo, e envio da amostra para realização do exame anatomopatológico.
Giant cell fibroma is a relatively rare lesion, which is clinically similar to other hyperplasias that occur in the oral cavity. It usually presents as a slow-growing, asymptomatic sessile or pedunculate nodule with a nodular surface of 0.5 to 1 cm in diameter. The research included the participation of a male patient, 71 years old, who was a smoker and an alcoholic.  In the previous medical history, the patient reported that he does not have comorbidities and systemic diseases diagnosed but has had the parafunctional habit of nibbling the region of the lesion for approximately eleven years. The importance of diagnosis in addition to evaluating the clinical and histopathological characteristics of the lesion, was also analyzed such characteristics as age distribution, gender predilection, location, and etiology of the lesion. The objective of this study is to report the case of a giant cell fibroma in an elderly male patient, with an excisional removal of the lesion located near the commissure of the left lower lip and sending the sample for an anatomopathological examination.
REMOÇÃO DE TÓRUS MANDIBULAR BILATERAL: RELATO DE CASO
Authors: Fecini Robson Aparecido , Rosa Tamily dos Santos , Bauer Henrique Augusto Andrade , Ribeiro Viviane Ferreira
Published: November 2023

Introdução: O tórus mandibular consiste em uma proeminência óssea localizada em assoalho lingual. São alterações ósseas assintomáticas, e de crescimento lento, sendo uma condição clínica não patológica. Sua remoção se faz necessária quando interfere em atividades diárias. Para um diagnóstico preciso, é realizado através de exames clínico intraoral e radiográfico oclusal. Sua remoção cirúrgica é empregada em diferentes técnicas existentes como: desgaste com brocas, uso de instrumentos manuais cinzel, alavancas e martelo, removendo ou desgastando apenas o aumento de volume ósseo preservando os tecidos adjacentes. Relato de Caso: O presente estudo tem como objetivo relatar um caso clínico em paciente do sexo feminino, 35 anos de idade, cor parda, ASA I, realizando a remoção de tórus mandibular bilateral localizado em região de assoalho lingual pela técnica cirúrgica de osteotomia elucidando a importância de sua retirada. Discussão: A etiologia dos tórus é bastante debatida e incerta. Podem estar associados à remodelação óssea cortical ou à reação às forças musculares que acometem na região. O seu diagnóstico diferencial é através do exame radiográfico, pois clinicamente esse aumento de volume pode ser confundido com tumores vasculares, dente incluso, neoplasia de glândulas salivares e abscessos. Conclusão: Diante do exposto o procedimento cirúrgico se mostra eficaz em casos de remoção de tórus mandibular.
Introduction: Torus mandibularis consists of a bony growth located on the mouth floor. They are asymptomatic bony alterations of slow growth, and they are a non-pathologic condition. Their removal is necessary when they interfere with daily activities. In order to obtain a precise diagnosis intraoral clinical exam as well as an occlusal radiography are performed. The surgical removal can be performed using different techniques such as abrasion by drilling, using manual tools such as a chisel, elevator, and hammer, and removing or grinding only the augment of the bony volume preserving the adjacent tissues. Case report: The aim of this study is to relate a clinical case of a female patient of 35 years of age, of mixed race, ASA I, who had a removal of bilateral torus mandibularis located in the mouth floor using the technique of osteotomy elucidating the importance of the removal. Discussion: The etiology of tori is quite debated and uncertain. They can be related to the cortical bone remodeling or to the reaction of muscular force that takes place in the region. Their differential diagnosis is through radiography as by a clinical examination this increase of volume could be confused with vascular tumors, an impacted tooth, salivary gland neoplasia, or abscess. Conclusion: In view of what has been exposed here we conclude that the surgical procedure of removal of torus mandibularis is efficient without recurrence.
Penentuan kriteria guru mata pelajaran produktif pada sekolah menengah kejuruan dengan metode analytic hierarchy process
Authors: Hidayat Taufik , Yayan Saputra
Published: November 2023

Data Badan Pusat Statistik tahun 2018 menunjukkan bahwa saat ini lulusan SMK menempati posisi pertama Tingkat Pengangguran Terbuka (TPT) atau yang tertinggi dibanding tingkat pendidikan yang lain yaitu sebesar 11,24 persen. Salah satu kendala mengapa lulusan SMK masih banyak yang menganggur adalah kompetensi lulusan yang belum sesuai dengan yang diinginkan oleh Dunia Usaha Dunia Industri (DU/DI). Peningkatan kompetensi lulusan sangat berkaitan erat dengan kondisi tenaga pendidik. Penelitian ini untuk mengidentifikasi kriteria yang diperlukan untuk menjadi seorang guru Sekolah Menengah Kejuruan (SMK) yang kompeten. Dengan menggunakan metode Analytic Hierarchy Process (AHP) dihasilkan Kriteria kompetensi sosial memiliki nilai bobot 0,61 lebih tinggi dibanding tiga kompetensi lainnya dengan dengan sub kompetensi yang paling tinggi adalah S1 yaitu Mampu berkomunikasi dan bergaul secara efektif dengan peserta didik memiliki nilai bobot 0,41
Analisis postur kerja menggunakan metode rapid upper limb assessment pada karyawan CV. Boneka Umi
Authors: Bagas Pratama Putra  , Kusnadi
Published: November 2023

CCV. Boneka Umi yang bergerak dibidang boneka merupakan salah satu dari banyaknya umkm yang terdapat di Kab. Karawang. Yang dimana CV ini sendiri masih menggunakan cara kerja manual atau dengan tenaga kerja manusia. Postur kerja yang kurang ergonomi akan menyebabkan pekerja menjadi lebih mudah kelelahan atau bahkan terkena penyakit. Tujuan dari penelitian ini yaitu untuk mengetahui seberapa besar risiko pada postur kerja, dan juga memberikan usulan untuk perbaikan postur kerja menjadi lebih aman dan nyaman. Metode yang digunakan dalam penelitian ini yaitu metode Rapid Upper Limb Assessment (RULA) yang merupakan suatu metode untuk menilai postur tubuh bagian atas pada saat seseorang sedang melakukan aktivitas atau bekerja. Berdasarkan hasil penelitian yang dilakukan menggunakan metode RULA didapatkan skor akhir RULA bernilai 4, artinya pekerjaan yang dilakukan diperlukan penyelidikan lebih lanjut dan cara kerja yang mungkin perlu berubah. Faktor postur kerja dan fasilitas yang kurang baik, dapat menyebabkan karyawan dapat terkena penyakit Musculoskeletal Disorders (MSDs)
Pengendalian kualitas produk percetakan buku menggunakan metode six sigma di CV Jaya Abadi Utama
Authors: Pribadi Agustinus Yunan , Saepudin Tubagus Hedi , Tanisri Roberta Heni Anggit , Bayu Riang
Published: November 2023

CV Jaya Abadi merupakan perusahaan yang bergerak di bidang percetakan yang memproduksi berbagai macam produk percetakan terutama buku. Selama periode tahun 2021 produk defect yang terjadi pada perusahaan sebesar 3,5%. Hasil tersebut melebihi standar yang telah ditetapkan oleh manajemen sebesar 3%. Penelitian ini bertujuan untuk menemukan faktor apa saja yang mempengaruhi terjadinya produk defect dan menentukan usulan perbaikan dengan menggunakan metode six sigma. Hasil dari pengumpulan dan pengolahan data pada penelitian ini menunjukkan jenis produk defect yang terbesar yaitu jenis defect tulisan kabur sebesar 34,7%, potongan tidak sesuai sebesar 30,5%, dan defect miring sebanyak 22,8%. Faktor yang mempengaruhi munculnya defect tersebut adalah kurangnya kedisiplinan operator dalam menjalankan pekerjaanya, belum adanya standar operasional prosedur pelatihan terhadap operator, dan mesin yang kurang perawatan. Usulan perbaikan yang perlu dilakukan yaitu dengan memberikan pelatihan ulang kepada karyawan, membuat standar operasional prosedur, dan melakukan perawatan mesin yang terjadwal
FEATURES OF TOURISM BUSINESS DEVELOPMENT “BEFORE AND AFTER” THE COVID-19 PANDEMIC
Authors: Khassenkhanov Nurshuak , Zhartay Zhanibek
Published: November 2023

Before the pandemic, in 2019, 1.5 billion international trips were made in the world – tourism provided seven percent of global GDP, and the entire lockdown-related sector stopped developing without any action. It was a serious blow for the tourism business, which is among the top three in terms of profit among the sectors of the economy. It is clear that this phenomenon will not remain without consequences. Representatives of the tourism business find new directions in the market and transform tourism in a new way. The most global change, naturally provoked by COVID-19, is the reorientation of travelers to domestic destinations. The borders were closed, but people did not have less desire to relax and learn. This trend has developed not only in Kazakhstan but also in other countries of the world, where people were given respite from full quarantine.
Study of a Korean Writing Class Plan for Foreign Undergraduate Students: Focusing On International Students Majoring in Korean Language Education and Translation
Authors:   Korean Association for Literacy, Lee Kawon
Published: November 2023

This study aims to investigate the teaching method of Korean writing for foreign undergraduate students. For foreign students majoring in Korean, the language serves a dual purpose as a tool for academic activities and an academic goal in itself, which distinguishes them from other learners with different academic objectives. Therefore, it is crucial to tailor Korean writing instruction to meet the specific needs of this student population.
Therefore, the goal is to design writing classes for foreign undergraduate students majoring in Korean, considering both genre and content knowledge.
After conducting a class using Dictogloss, it was confirmed that there was a positive impact and performance in practical, definitional, and practical aspects on listening and reconstruction skills, which are the basis of Korean interpretation/ translation and Korean writing.
Descifrando los Secretos de la Discalculia: un Viaje A Través de las Neurociencias y las Tecnologías de la Información
Authors: Parra Abarca Juan , Gallardo Bernal Iván
Published: November 2023

La discalculia es un trastorno del aprendizaje que afecta la habilidad de una persona para comprender y utilizar conceptos matemáticos. En las últimas décadas, las neurociencias y las tecnologías de la información han desempeñado un papel fundamental en el estudio y comprensión de la discalculia, permitiendo avances significativos en la identificación y tratamiento de este trastorno. Las neurociencias han proporcionado una visión profunda de cómo funciona el cerebro de las personas con discalculia. Mediante técnicas de imagen cerebral, como la resonancia magnética funcional, los investigadores pueden observar diferencias en la activación de áreas cerebrales clave durante tareas matemáticas. Esto ha revelado que las personas con discalculia pueden tener alteraciones en áreas relacionadas con el procesamiento numérico, la memoria de trabajo y la representación simbólica de los números. Por otro lado, las tecnologías de la información, han permitido el desarrollo de herramientas y programas de entrenamiento específicos para abordar la discalculia. Aplicaciones, juegos y software diseñados para adaptarse a las necesidades individuales de estudiantes con discalculia pueden mejorar sus habilidades matemáticas. Además, las tecnologías computarizadas de asistencia, como lectores de pantalla y programas de voz a texto, hacen que el contenido matemático sea más accesible para quienes tienen dificultades con la lectura y escritura.
La Alfabetización Informacional y el Impacto de la Inteligencia Artificial en la Educación Peruana
Authors: Guzman Rendon David Alexis
Published: November 2023

El presente ensayo tiene como objetivo el de analizar como la inteligencia artificial ha impactado en la disminución de la alfabetización informacional y cuáles son su limitación en el contexto de la educación peruana y en general en la sociedad. La generación de capacidades informacionales involucra reunir habilidades y conocimientos afines con la búsqueda, evaluación y utilización de información en tejidos digitales. En consecuencia, emplear la inteligencia artificial (IA) de esta forma, puede ser una herramienta muy útil para potenciar y mejorar estas competencias. En Perú la inteligencia artificial está influenciando la capacitación y generación de competencias informacionales al mejorar la búsqueda, evaluación y gestión de la información. Sin embargo, es fundamental que las personas desarrollen habilidades críticas y éticas para utilizar la IA de manera efectiva y beneficiosa. Aunque se debe tomar en cuenta que es importante tener en cuenta que la IA no debe reemplazar la importancia de las habilidades humanas en la capacitación y generación de competencias informacionales.
ERGONOMIA E DESIGN DO CINTO DE SEGURANÇA AUTOMÓVEL: OS CONDUTORES SENIORES
Authors: Fernandes Susana C. F.
Published: November 2023

O uso adequado do cinto de segurança automóvel é um meio efetivo de prevenção de ferimentos graves ou fatais em caso de acidente. Todavia, os ferimentos provocados pelo próprio cinto de segurança podem, por si só, resultar em lesões graves para o utilizador. Este trabalho analisa como minimizar o risco de ferimentos graves e fatais nos indivíduos seniores resultantes do cinto de segurança em colisões, com o objetivo de melhorar o design, o ajuste ergonómico e antropométrico, e o conforto dos cintos de segurança, baseada no estudo sistemático e integrativo da informação relevante na área em estudo. A metodologia de investigação utilizada é descritiva e correlaciona estudos recentes do setor automóvel, legislação e diretivas aplicáveis aos cintos de segurança em assentos, estatísticas de acidentes rodoviários, testes de colisão, relatórios médicos, avaliações ergonómicas, antropométricas e da saúde em idosos.Este estudo permitiu concluir que o design dos cintos de segurança com três pontos de fixação, aplicados nos veículos ligeiros mais comercializados, não são os mais adequados à antropometria, fragilidade e fraqueza física, conforto e segurança do sénior. A partir desta investigação propomos aspetos de melhoria a considerar no design dos cintos de segurança para minimizar esta problemática.
Toward Systems-Level Metabolic Analysis in Endocrine Disorders and Cancer
Authors: Lakhani Aliya , Kang Da Hyun , Kang Yea Eun , Park Junyoung O.
Published: November 2023

Metabolism is a dynamic network of biochemical reactions that support systemic homeostasis amidst changing nutritional, environmental, and physical activity factors. The circulatory system facilitates metabolite exchange among organs, while the endocrine system finely tunes metabolism through hormone release. Endocrine disorders like obesity, diabetes, and Cushing’s syndrome disrupt this balance, contributing to systemic inflammation and global health burdens. They accompany metabolic changes on multiple levels from molecular interactions to individual organs to the whole body. Understanding how metabolic fluxes relate to endocrine disorders illuminates the underlying dysregulation. Cancer is increasingly considered a systemic disorder because it not only affects cells in localized tumors but also the whole body, especially in metastasis. In tumorigenesis, cancer-specific mutations and nutrient availability in the tumor microenvironment reprogram cellular metabolism to meet increased energy and biosynthesis needs. Cancer cachexia results in metabolic changes to other organs like muscle, adipose tissue, and liver. This review explores the interplay between the endocrine system and systems-level metabolism in health and disease. We highlight metabolic fluxes in conditions like obesity, diabetes, Cushing’s syndrome, and cancers. Recent advances in metabolomics, fluxomics, and systems biology promise new insights into dynamic metabolism, offering potential biomarkers, therapeutic targets, and personalized medicine.
The Use of Vegetation Fire in Portugal: Historical Legislative and Normative Analysis
Authors: DE OLIVEIRA E. , SEQUEIRA A.C. , FERNANDES P.M. , COLAÇO M.C.
Published: November 2023

Fire has been a widely used tool in habitat and landscape management, mainly associated with land use dynamics of deforestation, pasture renewal, hunting and reclaiming new agriculture and rangeland areas. Ancient societies followed norms and rules regarding the used of fire. However, as these societies developed and land ownership changed, the conflicts generated by using fire triggered the need to regulate this practice by establishing the first laws. Such laws became of a broader type and narrower application over time until the twenty-first century. This research hypothesises that imposing constraints and regulations on using agro-silvopastoral fire through legislation in Portugal did not discourage its traditional use by communities. Through the historical legislative reconstruction of fire uses from before Portugal’s Foundation until 2021, it was possible to confirm the hypothesis and conclude that a paradigm change is needed by means of setting up an adequate legal framework for the different uses of fire in the land.

This article was published open access under a CC BY licence:
https://creativecommons.org/licences/by/4.0
.
The Advantages of Global Photometric Models in Fitting Transit Variations
Authors: Judkovsky Yair , Ofir Aviv , Aharonson Oded
Published: November 2023

Estimation of planetary orbital and physical parameters from light-curve data relies heavily on the accurate interpretation of Transit Timing Variation (TTV) measurements. In this letter, we review the process of TTV measurement and compare two fitting paradigms—one that relies on making transit-by-transit timing estimates and then fitting a TTV model to the observed timings, and one that relies on fitting a global flux model to the entire light-curve data set simultaneously. The latter method is achieved either by solving for the underlying planetary motion (often referred to as “photodynamics”), or by using an approximate or empirical shape of the TTV signal. We show that, across a large range of the transit S/N regime, the probability distribution function of the mid-transit time significantly deviates from a Gaussian, even if the flux errors do distribute normally. Treating the timing uncertainties as if they are distributed normally leads, in such a case, to a wrong interpretation of the TTV measurements. We illustrate these points using numerical experiments and conclude that a fitting process that relies on a global flux fitting, rather than the derived TTVs, should be preferred.
Bound Debris Expulsion from Neutron Star Merger Remnants
Authors: Zenati Yossef , Krolik Julian H. , Werneck Leonardo R. , Murguia-Berthier Ariadna , Etienne Zachariah B. , Noble Scott C. , Piran Tsvi
Published: November 2023

Many studies have found that neutron star mergers leave a fraction of the stars’ mass in bound orbits surrounding the resulting massive neutron star or black hole. This mass is a site of r-process nucleosynthesis and can generate a wind that contributes to a kilonova. However, comparatively little is known about the dynamics determining its mass or initial structure. Here we begin to investigate these questions, starting with the origin of the disk mass. Using tracer particle as well as discretized fluid data from numerical simulations, we identify where in the neutron stars the debris came from, the paths it takes in order to escape from the neutron stars’ interiors, and the times and locations at which its orbital properties diverge from those of neighboring fluid elements that end up remaining in the merged neutron star.
Spectro-polarimetric Properties of Sunquake Sources in X1.5 Flare and Evidence for Electron and Proton Beam Impacts
Authors: Kosovichev Alexander G. , Sadykov Viacheslav M. , Stefan John T.
Published: November 2023

The first significant sunquake event of Solar Cycle 25 was observed during the X1.5 flare of 2022 May 10, by the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory. We perform a detailed spectro-polarimetric analysis of the sunquake photospheric sources, using the Stokes profiles of the Fe i 6173 Å line, reconstructed from the HMI linear and circular polarized filtergrams. The results show fast variations of the continuum emission with rapid growth and slower decay lasting 3–4 minutes, coinciding in time with the hard X-ray impulses observed by the Konus instrument on board the Wind spacecraft. The variations in the line core appeared slightly ahead of the variations in the line wings, showing that the heating started in the higher atmospheric layers and propagated downward. The most significant feature of the line profile variations is the transient emission in the line core in three of the four sources, indicating intense, impulsive heating in the lower chromosphere and photosphere. In addition, the observed variations of the Stokes profiles reflect transient and permanent changes in the magnetic field strength and geometry in the sunquake sources. Comparison with the radiative hydrodynamics models shows that the physical processes in the impulsive flare phase are substantially more complex than those predicted by proton and electron beam flare models currently presented in the literature.
Using a Quench Level Approximation to Estimate the Effect of Metallicity on the Abundances of N-bearing Species in H2-dominated Atmospheres
Authors: Soni Vikas , Acharyya Kinsuk
Published: November 2023

Variations in atmospheric elemental nitrogen can considerably affect the abundance of major nitrogen-bearing species such as NH3 and HCN. Also, due to vertical mixing and photochemistry, their abundance deviates from thermochemical equilibrium. The goal of this study is to understand the effect of atmospheric metallicity on the composition of NH3, N2, and HCN over a large parameter space in the presence of vertical mixing, which when combined with the work on CHO-bearing species in Soni & Acharyya can provide a comprehensive understanding of the effect of atmospheric metallicity. We used quenching approximations and a full chemical kinetics model for the calculations, and a comparison between these two methods was made. To generate thermal profiles, the petitRADTRANS code was used. Chemical timescales of NH3 and N2 are found to be complex functions of metallicity, while HCN is inversely proportional. Using quenched abundances of NH3 and CO, the quenched abundance of HCN can be constrained since it remains in equilibrium with NH3, CO, and H2O. Quenched NH3 increases with increasing K

zz
until a particular point, after which it becomes independent of vertical mixing. There is a sweet spot in the K

zz
parameter space to maximize the quenched HCN for a given T
int and T
equi; the parameter space moves toward a lower equilibrium temperature, and the abundance of HCN increases with metallicity. Finally, we used a data set of quenched abundances to provide a list of potential candidates in which the observation of HCN is possible.
A Simple Method for Predicting N
H Variability in Active Galactic Nuclei
Authors: Cox Isaiah S. , Torres-Albà Núria , Marchesi Stefano , Zhao Xiurui , Ajello Marco , Pizzetti Andrealuna , Silver Ross
Published: November 2023

The unified model of active galactic nuclei (AGNs) includes a geometrically thick obscuring medium to explain the differences between type I and type II AGNs as an effect of inclination angle. This medium is often referred to as the torus and is thought to be “clumpy” as the line-of-sight column density, N
H, has been observed to vary in time for many sources. We present a method which uses a variation in the hardness ratio to predict whether an AGN has experienced N
H variability across different observations. We define two sets of hard and soft bands that are chosen to be sensitive to the energies most affected by changes in N
H. We calculate hardness ratios for Chandra and XMM-Newton observations of a sample of 12 sources with multiple observations, and compare the predictions of this method to the N
H values obtained from spectral fitting with physically motivated torus models (borus02, MYTorus, and UXCLUMPY). We also provide a calibrated correction factor that allows comparison between Chandra and XMM-Newton observations which is otherwise not possible due to differences in the instrument response functions. The sensitivity of this method can be easily adjusted. As we decrease the sensitivity, we find that the false positive rate becomes small while the true positive rate remains above 0.5. We also test the method on simulated data and show that it remains reliable for observations with as few as 100 counts. Therefore, we conclude that the method proposed in this work is effective in preselecting sources for variability studies.
Variability as a Predictor for the Hard-to-soft State Transition in GX 339−4
Authors: Lucchini Matteo , Ten Have Marina , Wang Jingyi , Homan Jeroen , Kara Erin , Adegoke Oluwashina , Connors Riley , Dauser Thomas , Garcia Javier , Mastroserio Guglielmo , Ingram Adam , van der Klis Michiel , König Ole , Lewin Collin , Mallick Labani , Nathan Edward , O’Neill Patrick , Panagiotou Christos , Piotrowska Joanna , Uttley Phil
Published: November 2023

During the outbursts of black hole X-ray binaries (BHXRBs), their accretion flows transition through several states. The source luminosity rises in the hard state, dominated by nonthermal emission, before transitioning to the blackbody-dominated soft state. As the luminosity decreases, the source transitions back into the hard state and fades to quiescence. This picture does not always hold, as ≈40% of the outbursts never leave the hard state. Identifying the physics that govern state transitions remains one of the outstanding open questions in black hole astrophysics. In this paper we present an analysis of archival RXTE data of multiple outbursts of GX 339−4. We compare the properties of the X-ray variability and time-averaged energy spectrum and demonstrate that the variability (quantified by the power spectral hue) systematically evolves ≈10–40 days ahead of the canonical state transition (quantified by a change in spectral hardness); no such evolution is found in hard-state-only outbursts. This indicates that the X-ray variability can be used to predict if and when the hard-to-soft state transition will occur. Finally, we find a similar behavior in 10 outbursts of four additional BHXRBs with more sparse observational coverage. Based on these findings, we suggest that state transitions in BHXRBs might be driven by a change in the turbulence in the outer regions of the disk, leading to a dramatic change in variability. This change is only seen in the spectrum days to weeks later, as the fluctuations propagate inwards toward the corona.
Unstable Phenomena in Stable Magnetospheres: Searching for Radio Flares from Magnetic OBA Stars Using VCSS
Authors: Polisensky Emil , Das Barnali , Peters Wendy , Shultz Matt E. , Semenko Eugene , Clarke Tracy E.
Published: November 2023

Although the majority of hot magnetic stars have extremely stable, ∼kilogauss strength surface magnetic fields with simple topologies, a subset undergoes small-scale explosions due to centrifugal breakout. The resulting small-scale flares are typically below the sensitivity of current magnetospheric diagnostics and do not generate detectable transient signatures. However, a recently reported radio flare from the hot magnetic star CU Vir suggests that some of the most energetic events do reach detectable levels. Motivated by this, we searched for transient radio sources in the first two epochs of the VLITE Commensal Sky Survey at the positions of 761 hot magnetic stars. We report three detections. A false-association analysis shows a less-than-1% probability that the sources are imaging artifacts. We then examine the stellar parameters of the three stars to understand if they are likely to produce flares. We conclude that while at this stage, we cannot make a definitive association of the detections with the stars, the current data are consistent with the hypothesis that the flares originate in the stellar magnetospheres.
НАУЧНИОТ ТРУД - Да се напише и да се објави
Authors: Спироски Мирко
Published: November 2023

Книгава НАУЧНИОТ ТРУД - Да се напише и да се објави претставува збир од сознанија, препораки и забелешки на кои наидував низ моите триесет години пишување и објавување. Обрнато е особено внимание на подигнување научното ниво при пишувањето иобјавувањето, затоа што само објавениот научен податок се смета како универзално достапен и можен за натамошни проверки и извор за нови научни идеи. Во книгава се изнесени правилата за пишување разни видови трудови, општите правила за рецензирање, печатење (типографски конвенции), поправање отисоции други технички аспекти на печатењето. Изнесени се кратенките и симболите, употребата на зборовите, транслитерацијата на македонската кирилица, собирањето и цитирањето литература, усното изнесување, како и авторските права. Во сите текстови е опишана употребата на компјутерите во пишувањето и објавувањето научен труд и се изнесени основните податоци за електронските изданија на трудовите. Приниципите на научната работа треба да бидат вклучени на додипломската настава за да им овозможат на студентите квалитетно совладување на нучниот приод во работата и да ги подготват за сопствена научна работа. Реорганизацијата на наставните планови и наставни содржини на факултетите треба да ја земе предвидн аучната работа и да ја вклучи како редовен предмет во наставните планови. Книгава е наменета за студентите на додипломски студии, но особено за студентите на последипломски студии од сите области на биомедицината како дел од нивното редовно образование. Книгата можат да ја користат сите кои сакаат да напишат и да објават труд, а сакаат тој дабиде според меѓународните стандарди.
 
Проф. д-р Мирко Спироски,
Скопје, март 2002 година
A new freshwater species of Gnorimosphaeroma (Crustacea, Isopoda, Sphaeromatidae) from Chichi-jima Island, Ogasawara Islands, Japan
Authors: Tomikawa Ko , Yoshii Junpei , Noda Akari , Lee Chi-Woo , Sasaki Tetsuro , Kimura Naoya , Nunomura Noboru
Published: November 2023

This study describes Gnorimosphaeroma rivularesp. nov. from a stream on Chichi-jima Island, Ogasawara Islands, Japan. This is the second freshwater species of Gnorimosphaeroma and the third Sphaeromatidae from oceanic islands. Gnorimosphaeroma rivularesp. nov. is morphologically similar to G. boninense Nunomura, 2006, G. naktongense Kwon & Kim, 1987 and G. saijoense Nunomura, 2013. However, G. rivularesp. nov. differs from these species in various morphological features, such as the shape of pleotelson and pereopod 2, relative length of antennule peduncular articles and pleopod 3 rami, number of setae on maxillula and maxilliped, and setation on pereopod 3. Phylogenetic analyses revealed that G. akanense is sister to G. saijoense, and together they are sister to G. hokurikuense. This three taxa clade is sister to G. rivularesp. nov. with G. iriei basal to them all. Our analysis concludes that G. boninense from Haha-jima Island, Ogasawara Islands is only distantly related to G. rivulare and may represent an independent colonization event.
Diversité et diversion dans les images médiatiques de l’industrie de la mode
Authors: Mouratidou Eleni
Published: November 2023

Critiquée pour les stéréotypes véhiculés en matière de représentation du corps de la femme, la presse magazine féminine s’est donnée comme mission de célébrer la diversité féminine en optant pour de nouvelles mises en scène photographiques. Bien avant les mouvements sociaux revendiquant le bannissement de l’exposition médiatique sexuée et standardisée du corps féminin, le titre Vogue Paris a proposé dès les années 2010 des scènes photographiques revendiquant une certaine audace car utilisant des mannequins issues de la catégorie descriptive dite taille plus. Cette recherche interroge la façon dont la prétention à la diversité des représentations du corps de la femme par l’industrie de la mode ne fait que renforcer l’assignation de la femme dans un stéréotype immuable : celui de la réification du corps féminin.
L’enquête, terre d’accueil. Expériences, agencements et conversations
Authors: Le Marec Joëlle , Faury Mélodie
Published: November 2023

Nous tentons dans ce texte de rendre compte de ce que nous font nos enquêtes et nos conversations, à partir de ce que nous sentons qui importe. En effet, les agencements, relations et savoirs éprouvés en situation comptent en tant que tels. Dans la recherche conventionnelle, ils sont exploités comme productions. La brutalité consiste à traiter ce qui vient des enquêté.es comme des traces ou des signes d’autre chose : elle a des effets sur la recherche, et plus généralement, sur le monde que nous contribuons à former ou déformer par nos pratiques mêmes. Comment échapper à cet ensorcellement, à ces alternatives infernales ? En tentant d’élargir l’espace des partages, conversation par conversation, en récupérant les espaces de remembrements, dispositif par dispositif, nous tentons d’élargir non pas un champ de recherche mais un réseau de lieux et de moments où peut prendre place chaque voix entendue. Il s’agit de pratiquer l’enquête comme transformation continue des un.es par les autres, et de tenter de faire place, de proche en proche, à d’autres conversations restituées, d’autres voix possibles, d’autres manières de se délier et de se relier, d’autres réels à activer dans des trames de sens inaperçues.