bluuebunny/crossref_metadata_2025 huggingface dataset:
Radical pairs may explain reactive oxygen species-mediated effects of hypomagnetic field on neurogenesis
Authors: Rishabh Rishabh , Zadeh-Haghighi Hadi , Salahub Dennis , Simon Christoph
Published: June 2022

Exposures to a hypomagnetic field can affect biological processes. Recently, it has been observed that hypomagnetic field exposure can adversely affect adult hippocampal neurogenesis and hippocampus-dependent cognition in mice. In the same study, the role of reactive oxygen species (ROS) in hypomagnetic field effects has been demonstrated. However, the mechanistic reasons behind this effect are not clear. This study proposes a radical pair mechanism based on a flavin-superoxide radical pair to explain the modulation of ROS production and the attenuation of adult hippocampal neurogenesis in a hypomagnetic field. The results of our calculations favor a singlet-born radical pair over a triplet-born radical pair. Our model predicts hypomagnetic field effects on the triplet/singlet yield of comparable strength as the effects observed in experimental studies on adult hippocampal neurogenesis. Our predictions are in qualitative agreement with experimental results on superoxide concentration and other observed ROS effects. We also predict the effects of applied magnetic fields and oxygen isotopic substitution on adult hippocampal neurogenesis.
Artificial intelligence-powered smartphone application, AICaries, improves at-home dental caries screening in children: Moderated and unmoderated usability test
Authors: Al-Jallad Nisreen , Ly-Mapes Oriana , Hao Peirong , Ruan Jinlong , Ramesh Ashwin , Luo Jiebo , Wu Tong Tong , Dye Timothy , Rashwan Noha , Ren Johana , Jang Hoonji , Mendez Luis , Alomeir Nora , Bullock Sherita , Fiscella Kevin , Xiao Jin
Published: June 2022

Early Childhood Caries (ECC) is the most common childhood disease worldwide and a health disparity among underserved children. ECC is preventable and reversible if detected early. However, many children from low-income families encounter barriers to dental care. An at-home caries detection technology could potentially improve access to dental care regardless of patients’ economic status and address the overwhelming prevalence of ECC. Our team has developed a smartphone application (app), AICaries, that uses artificial intelligence (AI)-powered technology to detect caries using children’s teeth photos. We used mixed methods to assess the acceptance, usability, and feasibility of the AICaries app among underserved parent-child dyads. We conducted moderated usability testing (Step 1) with ten parent-child dyads using "Think-aloud" methods to assess the flow and functionality of the app and analyze the data to refine the app and procedures. Next, we conducted unmoderated field testing (Step 2) with 32 parent-child dyads to test the app within their natural environment (home) over two weeks. We administered the System Usability Scale (SUS) and conducted semi-structured individual interviews with parents and conducted thematic analyses. AICaries app received a 78.4 SUS score from the participants, indicating an excellent acceptance. Notably, the majority (78.5%) of parent-taken photos of children’s teeth were satisfactory in quality for detection of caries using the AI app. Parents suggested using community health workers to provide training to parents needing assistance in taking high quality photos of their young child’s teeth. Perceived benefits from using the AICaries app include convenient at-home caries screening, informative on caries risk and education, and engaging family members. Data from this study support future clinical trial that evaluates the real-world impact of using this innovative smartphone app on early detection and prevention of ECC among low-income children.
Testing non-autonomous antimalarial gene drive effectors using self-eliminating drivers in the African mosquito vector Anopheles gambiae
Authors: Ellis David A. , Avraam George , Hoermann Astrid , Wyer Claudia A. S. , Ong Yi Xin , Christophides George K. , Windbichler Nikolai
Published: June 2022

Gene drives for mosquito population modification are novel tools for malaria control. Strategies to safely test antimalarial effectors in the field are required. Here, we modified the Anopheles gambiae zpg locus to host a CRISPR/Cas9 integral gene drive allele (zpgD) and characterized its behaviour and resistance profile. We found that zpgD dominantly sterilizes females but can induce efficient drive at other loci when it itself encounters resistance. We combined zpgD with multiple previously characterized non-autonomous payload drives and found that, as zpgD self-eliminates, it leads to conversion of mosquito cage populations at these loci. Our results demonstrate how self-eliminating drivers could allow safe testing of non-autonomous effector-traits by local population modification. They also suggest that after engendering resistance, gene drives intended for population suppression could nevertheless serve to propagate subsequently released non-autonomous payload genes, allowing modification of vector populations initially targeted for suppression.
La revista de medicina y cine como difusora de experiencias educativas relacionadas con las humanidades en ciencias de la salud
Authors: Pérez Jorge
Published: June 2022

La Revista de Medicina y Cine (RMC) se creó en el año 2005 con la finalidad de mostrar la importancia del arte cinematográfico en su relación con la Medicina o con otras profesiones sanitarias. Con el paso del tiempo la revista fue abriéndose al encuentro entre otras disciplinas artísticas, como la literatura o las artes plásticas, con las ciencias de la salud y en estos momentos puede considerarse como un auténtico foro de humanidades médicas.
ASSESSMENT OF PROSPECTS FOR THE DEVELOPMENT OF RURAL TOURISM IN THE ALTAI TERRITORY
Authors: Petrova M. V.
Published: June 2022

In recent years, against the background of the coronavirus pandemic in Russia, the importance of domestic tourism has been increasing. Prospects for the development of rural tourism are associated with the implementation of state support measures for tourism in Russia, adopted in 2021, which was declared the Year of Rural Tourism by the World Tourism Organization (UNWTO). The article assesses the prospects for the development of rural and ecological tourism in the Altai Territory, taking into account the specifics of natural conditions and cultural and historical features of the region.

Altai Krai has favorable natural and climatic conditions for the development of rural tourism. Currently, a state program to support the development of tourism in the region is being implemented. Based on the research carried out by the author, recommendations were developed to reveal the potential of rural tourism development as an important direction of sustainable rural development. The implementation of the developed recommendations will contribute to increasing the attractiveness of rural and ecological tourism in the Altai Territory, and in general, the development of domestic tourism in Russia.
Classificação Baseada em Objeto de Tipologias de Cobertura Vegetal em Área Úmida Integrando Imagens Ópticas e SAR
Authors: Belloli Tassia Fraga , Guasselli Laurindo Antonio , Kuplich Tatiana , Ruiz Luis Fernando Chimelo , Simioni João Paulo Delapasse
Published: June 2022

Delinear com precisão os limites das Áreas Úmidas (AUs) e os padrões de cobertura vegetal é um passo essencial para a rápida avaliação e gestão destes ecossistemas. A Análise de Imagens Baseada em Objeto (Object-Based Image Analysis - OBIA) a partir de aprendizado de máquina e da integração de dados ópticos e de radar apresentam vantagens em relação a outras técnicas no mapeamento da cobertura vegetal nos ecossistemas de AUs. Este estudo tem como objetivo classificar tipologias de cobertura vegetal em áreas úmidas, integrando imagens ópticas e SAR dos satélites Sentinel-1 e 2A e o algoritmo Random Forest à classificação OBIA, utilizando como estudo de caso o Banhado Grande, localizado no Rio Grande do Sul. Como resultados, as polarizações VH e VV do Sentinel-1 obtiveram a maior relevância na classificação (18,6%). Entre as bandas ópticas as maiores relevâncias ocorreram para as bandas Borda Vermelha e Infravermelho Médio. A partir dos atributos ópticos, a classificação obteve acurácia de 86,2%. Quando inseridos os atributos SAR mais importantes, a acurácia aumentou para 91,3%. A classe Macrófitas Emergentes (ME), correspondente à espécie Scirpus giganteus, alcançou a melhor acurácia (91%), com área estimada em 1.507 ha. Concluímos que a integração de imagens aliada ao método de classificação possibilitou identificar e delimitar a extensão das tipologias vegetais e a área total do ecossistema. Os resultados acurados demostram que esta abordagem metodológica pode ser expandida para outras áreas úmidas palustres subtropicais.
Avaliação da Qualidade da Rede de Drenagem Fornecida pelo MERIT Hydro: uma Base de Dados com a Rede Hidrográfica Disponibilizada em Escala Global
Authors: Lima Dário Macedo , Paz Adriano Rolim da , Lopes Aricson Garcia , Sena Thiago de Sá , Claudino Cinthia Maria de Abreu
Published: June 2022

O mapa de representação dos rios é importante em diversos estudos e costuma ser obtido através do processamento de dados de elevação provenientes do Modelo de Digital de Elevação (MDE). Com base nisso, foi desenvolvido o MERIT Hydro, que fornece a rede hidrográfica de todo o globo, obtida através do processamento do MDE e de informações da posição de rios, lagos e demais corpos d’água em escala global. Nesse sentido, este trabalho avaliou a qualidade da rede de drenagem fornecida pelo MERIT Hydro e comparou com o desempenho da rede de drenagem obtida com o processamento do MDE disponibilizado pelo projeto Shuttle Radar Topographic Mission (SRTM). Para tanto foi utilizada uma rede de drenagem de referência disponível para alguns rios das bacias hidrográficas do Rio Uruguai e do Rio São Francisco, e obtida através da digitalização manual de rios com base em imagens de satélite. Foram avaliadas métricas de comprimento da rede de drenagem, percentagem dentro do buffer e distância média. Os resultados mostraram que a rede de drenagem proveniente do MERIT Hydro representou com maior precisão os rios avaliados e o desempenho do MERIT Hydro foi no geral superior ao desempenho da rede obtida a partir do processamento do MDE do SRTM.
Identificação das Mudanças Espaço-temporais nos Biomas Brasileiros por Intermédio da Análise de Componentes Principais (ACP)
Authors: Sartorio Letícia Figueiredo , Maier Éder Leandro Bayer
Published: June 2022

O artigo apresenta uma análise espaço-temporal das mudanças no uso e cobertura da terra dos Biomas brasileiros a partir do uso dos dados do projeto MapBiomas e da Análise de Componentes Principais. Possibilitando agrupar padrões espaciais que representam as principais mudanças ambientais e uma análise temporal da substituição de sistemas ambientais naturais em sistemas agrícolas ou urbanos. Os dados foram disponibilizados pelo MapBiomas, coleção 4.1, para o período entre 1985 e 2018, processados na plataforma Google Earth Engine e representados em mapas temáticos elaborados no QGIS. A Análise de Componentes Principais possibilitou a redução do conjunto de dados de 34 imagens para duas Componentes Principais, as quais representam 84,28% da variância. Os resultados indicaram que a primeira componente principal está associada às estruturas dos sistemas ambientais dos biomas brasileiros e a segunda componente está relacionada aos processos de mudanças do uso e cobertura da terra, sendo que a mudança denominada de: 1) Perda de Superfície com Água; 2) Barragens ou áreas Alagadas; 3) Processos Naturais e Silvicultura e 4) Conversão de Áreas Naturais em Urbanas ou Agropecuárias correspondem a 0,081%, 0,12%, 1,45% e 13,17% do território brasileiro, respectivamente. Nesse contexto, o Sul da Amazônia e o Cerrado são os biomas que apresentaram as mudanças espaço-temporais com maiores dimensões espaciais e as mais rápidas, predominantemente entre 1990 e 2005. Por fim, ressalta-se o potencial da técnica de Análises de Componentes Principais como ferramenta de identificação de padrões espaço-temporais das mudanças nos Biomas brasileiros.
La consulta previa en la solución de conflictos socio-ambientales
Authors: Hillón Vega Yulieth Teresa
Published: June 2022

Este artículo examina las dificultades y desafíos que enfrenta el derecho a la consulta previa como herramienta de protección de los derechos de los pueblos indígenas y tribales en Colombia, en particular, frente a proyectos de exploración y explotación de recursos naturales. Partiendo de un análisis teórico, el texto explora dos perspectivas de análisis: por una parte, presenta algunas de las limitaciones encontradas en la construcción jurídica de esta figura en el ámbito nacional, tanto en el marco legal que la regula como en la jurisprudencia constitucional que la ha desarrollado. Por otra, se centra en algunas de las consecuencias teórico-prácticas contradictorias que se derivan de su puesta en marcha.
Effect of Emotional Distress Monitoring and Intervention in Preventing Non-suicidal Self-injury (NSSI) of College Students
Authors: Chen Chunrong , Li Xianrong , Deng Yu
Published: June 2022

Objective: In this study, we monitored and intervened in the emotional status of college students to understand the effect of intervention measures on the prevention and control of non-suicidal self-harm, and to provide a reference for the prevention and control of self-harm in college students. Methods: We conducted a baseline survey of 1832 first-year students across 3 vocational colleges in Chongqing, China in October 2019. In October 2020, we followed-up regarding the nonsuicidal self-injury (NSSI) occurrences among our original respondents. During the year, students’ emotions were regularly monitored. The students who scored > 10 and had moderate suicidal thoughts were provided counseling to reduce their emotional stress. If the students could not reduce these emotions, their counselors contacted the school psychological center for professional counseling. If the school psychological counseling center diagnosed the students with severe depression, the counselors informed their parents and suggested hospital treatment. Results: The detection rate of NSSI history was 18.52% (320/1728), and the detection rate of the follow-up survey was 8.13% (137/1685); the difference in the detection rate was statistically significant (χ2 = 128.3103, p < .001). Conclusions: Our results show that monitoring and intervening in college students’ emotional states can prevent the occurrence of NSSI behavior.
Topology optimization of computer communication network based on improved genetic algorithm
Authors: Ai Hua , Fan Yuhong , Zhang Jilei , Ghafoor Kayhan Zrar
Published: June 2022

The topology optimization of computer communication network is studied based on improved genetic algorithm (GA), a network optimization design model based on the establishment of network reliability maximization under given cost constraints, and the corresponding improved GA is proposed. In this method, the corresponding computer communication network cost model and computer communication network reliability model are established through a specific project, and the genetic intelligence algorithm is used to solve the cost model and computer communication network reliability model, respectively. It has been proved that GA can solve the complex problems of computer working environment better, which is 80% higher than the general algorithm, and can select the optimal scheme pertinently.
Computational study of subcooled water injection into steam line: effect of Reynolds number on flow transition to study condensation induced water hammers
Authors: Quddus Abdul , Shah Ajmal , Qureshi Kamran Rasheed , Ayub Muhammad Khawar , Iqbal Mazhar , Samee Abdus
Published: June 2022

The direct contact condensation (DCC) of steam in subcooled water encounters in wide range of the industrial applications. On one side, it is an efficient and rapid, mass and heat transfer phenomenon. But, on the other side, it may generate condensation induced water hammers (CIWH) events which may cause high pressure peaks resulting in severe damage to the mechanical systems. This computational study intends to explore the underlying physics of CIWH events while injecting subcooled water into steam filled horizontal pipe section. The Reynolds number is varied from, Re
w
 = 60,750 to 646,900, to study the flow regimes (stratified and slug), onset of CIWH and local flooding conditions. The results have been compared with the published data and found in good agreement. It has been observed that for Re
w
 = 182,300, flow remains stratified. However, the flow regime changes from stratified to slug flow at Re
w
 = 303,850–646,900, possibly due to the onset of CIWH. Extensive steam pockets have been observed at Re
w
 = 303,850, which may be considered as onset of CIWH. Local flooding condition is also started at Re
w
 = 303,850 and is observed to be shifted upstream with the increase in Reynolds number. This study is considered to be useful for the safe design and economical operation of the relevant systems in nuclear and other related industry.
Compressibility-Based Interpretation of Cone Penetrometer Calibration Chamber Tests and Corresponding Boundary Effects
Authors: Gamez Joseph A. , Olson Scott M.
Published: June 2022

Calibration chambers have been used to calibrate in situ testing devices (e.g., standard penetration test, cone penetration test, and flat plate dilatometer) in laboratory settings. Researchers have long suggested, however, that penetration resistance measured in a calibration chamber differs from what would be measured under similar conditions in the free field due to the finite chamber size and chamber boundary conditions. Using a database of 847 cone penetration tests performed in sand-filled calibration chambers, this paper reexamines assumptions used to interpret tests and boundary effects, analyzes the efficacy of published calibration chamber correction factors, and provides a novel framework for interpreting calibration chamber data based on soil compressibility. This study suggests that (1) trends in cone tip resistance are relatively unaffected by boundary effects; (2) factors used to correct calibration chamber cone tip resistance to an equivalent free-field value only marginally improved the correlations/trends; and (3) cone tip resistance is similar for soils of equally similar compressibility, density, and effective confining stress. The authors suggest that calibration chamber data may not require corrections for chamber size or boundary conditions so long as a ratio of chamber diameter to cone penetrometer diameter of 20 is satisfied.
Social Class and Ethnocentric Worldviews
Authors: Trošt Tamara , Marinšek Denis
Published: June 2022

The link between socioeconomic status (SES) and ethnocentric worldviews is well established in the literature, with countless studies showing the effect of SES on a variety of attitudes, preferences, lifestyles, and behaviors. This literature has been revisited in recent studies on the resurgence of the Far Right, with claims of the rise of “working-class populism,” according to which the working class is more likely to identify with right-wing and populist claims. In the post-Yugoslav context, along with the turbulent socioeconomic and political transformation from socialism, research has also shown that “everyday” people’s understandings of themselves and of others are very much stratified by education, occupational status, urban/rural residence, and region, pointing to a marked effect of SES on civic/ethnic identification, attachment to Europe, ethnic exclusivism, and gender/sexual conservatism. Yet, the nature of the link between socioeconomic status and nationalist attitudes is still insufficiently understood. In this article, we go beyond the traditional focus on cultural explanations, instead relying on cross-sectional quantitative survey data to shed light on important class differences in worldviews of people living in Croatia and Serbia. We find that education remains the most robust predictor of nationalist attitudes, while age, gender, income, and religiosity matter to various degrees. We conclude with a discussion on the continuing importance of SES in understanding ethnocentric worldviews, from Brexit and Trump to the former Yugoslavia.
Pemahaman Konsep Pemrograman Melalui Modul Problem Based Learning
Authors: Hasanah Fitria Nur
Published: June 2022

Pemahaman konsep pemrograman berorientasi objek adalah kemampuan untuk menerjemahkan atau menangkap maksud dari konsep pemrograman berorientasi objek. Mahasiswa dikatakan telah memahami konsep pemrograman jika mereka dapat menerapkan logika berfikir yang telah mereka pahami dalam kegiatan belajar. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penggunaan modul PBO berbasis PBL pada pemahaman konsep pemrograman dan tingkat pengaruh penggunaan modul PBO berbasis PBL terhadap pemahaman konsep pemrograman mahasiswa dalam Program Studi Pendidikan Teknologi Informasi. Jenis penelitian yaitu kuantitatif dengan desain pra-eksperimental tipe One - Group Pretest-Posttest Design dengan teknik pengambilan sampel purposive sampling. Sampel dalam penelitian ini adalah mahasiswa yang telah mengampuh mata kuliah PBO sejumlah 20 mahasiswa. Instrument yang digunakan yaitu tes pemahaman konsep dan angket respon mahasiswa yang dianalisis  menggunakan analisis regresi sederhana. Pertanyaan tes diberikan sebelum dan sesudah proses pembelajaran dengan menggunakan modul PBO berbasis PBL dan merujuk pada indikator pemahaman konsep sesuai dengan capaian mata kuliah. Hasil uji hipotesis menunjukkan nilai sig 0,03 <0,05 maka H0 ditolak, dari hasil tersebut dapat disimpulkan bahwa ada pengaruh modul PBO terhadap pemahaman konsep pemrograman mahasiswa dengan besar pengaruh adalah 40,6%.
Learning Motivation, Self-Regulated Learning, And Mathematical Communication Skills Verbal And Written By Students' In Learning Mathematics During The Covid-19 Pandemic
Authors: Efriyadi Dodi , Nurhanurawati Nurhanurawati
Published: June 2022

This study aims to determine (1) how the learning motivation, self-regulated learning and verbal mathematical communication skills of students; and (2) how are students' learning motivation, self-regulated learning and mathematical communication skills in writing mathematics learning during the covid-19 pandemic. The research used is a mixed method type Sequential Exploratory Design. The population is students of class XI IPA SMA Negeri 1 Pringsewu. Data was collected using questionnaires, observations, documentation and written mathematical communication skills tests. The results of the study show that learning mathematics during the Covid-19 pandemic where learning motivation and self-regulated learning directly affect students' written mathematical communication skills, but verbal mathematical communication skills really need to be considered because they are still in the low category.Penelitian ini bertujuan untuk mengetahui (1) bagaimana kemampuan komunikasi matematis secara lisan peserta didik; dan (2) bagaimana motivasi belajar, kemandirian belajar dan kemampuan komunikasi matematis secara tulis peserta didik dalam pembelajaran  matematika pada masa pandemi covid-19. Penelitian yang digunakan adalah mixed methods tipe Sequential Exploratory Design. Populasi dalam penelitian ini adalah peserta didik kelas XI IPA SMA N 1 Pringsewu. Pengumpulan data menggunakan kuesioner, observasi, dokumentsi dan tes kemampuan komunikasi matematis tulis. Hasil penelitian menunjukkan pembelajaran matematika selama pandemi Covid-19 dimana motivasi belajar dan kemandirian belajar mempengaruhi secara langsung kemampuan komunikasi matematis secara tulisan peserta didik, tetapi kemampuan komunikasi matematis secara lisan sangat perlu di perhatikan karena masig tergolong dalam kategori rendah.
Cognitive Development of Mathematics Education Students based on Piaget's Theory in terms of Gender Differences
Authors: Laja Yosepha Patricia Wua , Hijriani Lailin
Published: June 2022

This study aims to understand the cognitive development of mathematics education students based on Piaget's theory in terms of gender differences. This research method is descriptive quantitative research with the research subjects being students of mathematics education at Timor Universities. Students' cognitive development was measured using the Logical Operations Test (LOT), which consisted of 14 numbers. LOT questions are given to students, the results are analyzed and described. The results showed that the cognitive development stage for females was 19.18% in the initial concrete stage, 36.99% in the final concrete stage, 13.70% in the initial formal stage and 1.37% in the final formal stage. Male at 9.59% in the initial concrete stage, 6.85% in the final concrete stage, 9.59% in the initial formal stage and 2.74% in the final formal stage. Meanwhile, students' understanding based on seven logical operations is in low understanding for each type.Penelitian ini bertujuan untuk  mengetahui perkembangan kognitif mahasiswa pendidikan matematika berdasarkan teori Piaget ditinjau dari perbedaan jenis kelamin. Metode penelitian ini adalah penelitian deskriptif kuantitatif dengan subjek penelitian adalah mahasiswa pendidikan matematika Universitas Timor. Perkembangan kognitif mahasiswa diukur dengan menggunakan Tes Operasi Logis (TOL) yang berjumlah 14 nomor. Soal TOL diberikan kepada mahasiswa, hasilnya dianalisis dan dideskripsikan. Hasil penelitian menunjukkan bahwa tahap perkembangan kognitif sebesar 19,18% tahap konkret awal, 36,99 % tahap konkret akhir, 13,70% tahap formal awal dan 1,37% tahap formal akhir bagi mahasiswa perempuan. Sementara hasil pemetaan tahap perkembangan kognitif sebesar 9,59% tahap konkret awal, 6,85 % tahap konkret akhir, 9,59% tahap formal awal dan 2,74% tahap formal akhir bagi mahasiswa laki-laki. Sementara itu pemahaman mahasiswa berdasarkan 7 operasi logis berada dalam pemahaman rendah untuk masing-masing tipe.
Development of Elementary Linear Algebra Learning Video Media in Islamic Context
Authors: Mattoliang Lisnasari Andi , Majid Ahmad Farham , Hasan Rezkianti , Baharuddin Baharuddin , Nur Fitriani
Published: June 2022

The development of online learning is increasingly rapid, especially during the Covid-19 pandemic which demands an innovation in the education system. However, this development is not accompanied by the availability of innovative learning media. Therefore, this study aims to develop an elementary linear algebra learning video media in Islamic context. This research type is research and development using a 4D development model consisting of 4 stages, namely define, design, develop, and disseminate. The subjects of this research trial were students of the Department of Mathematics Education, class of 2020 B, Faculty of Tarbiyah and Teacher Training at UIN Alauddin Makassar. The research data were obtained using questionnaires, observations, and learning outcomes tests. The data is processed through the analysis of validity, practicality, and effectiveness. The results showed that the video media that had been developed had met the criteria of being valid, practical, and effective. Thus, this learning video media can be a solution to better support the implementation of online learning.Perkembangan pembelajaran daring semakin pesat khususnya di masa Pandemi Covid-19 yang menuntut adanya inovasi sistem pendidikan. Namun, perkembangan ini tidak diiringi dengan ketersediaan media pembelajaran yang inovatif. Karena itu, penelitian ini bertujuan untuk mengembangkan media video pembelajaran aljabar linear elementer dalam konteks Islam. Jenis penelitian ini adalah penelitian dan pengembangan (research and development) dengan menggunakan model pengembangan 4D yang terdiri dari 4 tahapan yaitu define, design, develop, dan disseminate. Subjek uji coba penelitian ini adalah mahasiswa Jurusan Pendidikan Matematika, angkatan 2020 kelas B, Fakultas Tarbiyah dan Keguruan UIN Alauddin Makassar. Data penelitian diperoleh dengan menggunakan angket, observasi, dan tes hasil belajar. Data diolah melalui analisis kevalidan, kepraktsian, dan keefektifan. Hasil penelitian menunjukkan bahwa media video pembelajaran aljabar linear elementer dalam konteks Islam yang dikembangkan telah memenuhi kriteria valid, praktis, dan efektif. Dengan demikian, media video pembelajaran ini dapat menjadi solusi untuk mendukung terlaksananya pembelajaran daring dengan lebih baik.
Use of Radial Artery Grafts for Coronary Artery Bypass Grafting
Authors: Zheng Dechang , Zhang Li , Yang Mao Dong , Wu Jian
Published: June 2022

Coronary artery bypass grafting (CABG) is the primary surgical treatment for coronary artery disease (CAD). However, long-term clinical practice has confirmed the poor long-term patency of saphenous vein grafts (SVG), prompting surgeons to investigate alternatives, such as the use of radial artery (RA) grafts. In this report, we review and discuss the current status of radial artery application during CABG and current controversies in the field. Ultimately, evidence indicates that RA-CABG is associated with good long-term patency and is suitable for patients with severe stenosis. However, the compensatory capacity of the ulnar artery should be assessed prior to RA harvesting. Given that the RA is prone to spasms, routine application of calcium channel blockers is recommended. Several studies also have indicated that sequential grafting is an effective method for maximizing radial artery application and that patency rates are similar for the radial artery and right internal mammary artery. In contrast, the use of the bilateral internal mammary arteries is technically more demanding and exhibits a significant volume-outcome relationship. The decision to use the right internal mammary artery or radial artery should be based on individual patient characteristics and the experience of the surgical team.
Diseño y elaboración de las tecnologías de inspección basadas en herramientas de limpieza para el registro y análisis de los parámetros de operación en líneas de transporte de hidrocarburos
Authors: Quintero Mario Alberto , Zambrano Medina Humberto , Garnica Hernán Alfonso , Valbuena Niño Ely Dannier , Quintero Sergio
Published: June 2022

En este artículo se presenta el diseño y construcción de una herramienta inteligente (pig o marrano) que permite la medición de parámetros de operación de tuberías para transporte de hidrocarburos y que registra señales asociadas a su dinámica de movimiento dentro de la línea de transporte. El marrano está concebido para ser utilizado de modo regular por el operador, para aprovechar principalmente corridas rutinarias de limpieza. La herramienta recoge datos a bajo costo y el análisis de los mismos aporta al operador información valiosa sobre la evolución de la tubería, el grado de residuos, la presencia de posibles daños geométricos (defectos) e información sobre los parámetros operacionales. Esta información puede integrarse al plan de mantenimiento, lo cual permitirá una mejor toma de decisiones y ayudará a obtener un panorama de riesgos gracias al control de los cambios que experimenta la línea con el tiempo.
Diseño e implementación de un repositorio de componentes software para soportar el desarrollo de software empresarial - caso: División de Servicios de Información de la Universidad Industrial de Santander
Authors: Rojas Morales Fernando Antonio , Delgado Rojas Robinson , Vera Rivera Fredy Humberto
Published: June 2022

El modelo de desarrollo basado en componentes es un nuevo paradigma de desarrollo que permite la implementación de sistemas rápidamente, a partir de componentes de software previamente desarrollados. El repositorio de componentes es la pieza principal de este modelo de desarrollo ya que permite la administración, selección, identificación, cualificación y ensamblaje de componentes de software. En este artículo se explica el modelo de desarrollo, y cómo se diseñará un repositorio de componentes para dar soporte al proceso de desarrollo de software empresarial. Para el diseño se tendrán en cuenta todos los requerimientos funcionales y no funcionales que debe contemplar un repositorio de componentes, que soporte el modelo de desarrollo basado en componentes. La implementación de este repositorio se aplicará a la División de Servicios de Información DSI, de la Universidad Industrial de Santander UIS, como mejora al modelo de desarrollo allí implantado, para optimizar este modelo de desarrollo por componentes, ya que con el repositorio se permite disminuir los tiempos de búsqueda, selección e identificación de los componentes. Además de mejorar los tiempos de respuesta de atención a las solicitudes de mantenimiento y desarrollo que allí se generan, ya que las demoras se disminuyen al máximo al obtener e identificar de forma rápida los componentes que deben ser revisados o integrados en los sistemas solicitados. También se elimina el desarrollo de componentes de forma repetida y descontrolada por la falta de la herramienta que permita monitorear y centralizar los componentes desarrollados.
Improving the methodology of planning training exercises of speed and power orientation of football players in the annual training cycle
Authors:   Prydniprovska State Academy оf Physical Culture аnd Sports, Ovcharenko Serhii , Yakovenko Artem ,   Prydniprovska State Academy оf Physical Culture аnd Sports, Matyash Vadym ,   Prydniprovska State Academy оf Physical Culture аnd Sports
Published: June 2022

The rapid development of football, accompanied by a constant growth and intensity of physical activity in the training and competitive processes of football players, requires the need to search for new forms, means and methods of organizing the educational and training process. The purpose of the study is to develop a program of speed-strength training for qualified football players, aimed at increasing the stability of performing speed-strength actions. Material and methods: in accordance with the goals and objectives, the research program included methods of analysis and generalization of scientific and methodological literature, pedagogical observations, pedagogical testing, pedagogical experiment, methods of mathematical statistics. The study was conducted with the players of the team "FC VPK-Agro" - participants of the Сhampionship of Ukraine among the teams of the First League. 20 football players of the team participated in resepctive research. The research was carried out in 2 stages. At the first stage, the dynamics of the speed-strength qualities of the players in the annual cycle was determined. At the second stage, an experimental verification of the developed methodology for improving the development of speed-strength qualities was carried out. Results: the article presents the level of development of the speed-strength qualities of football players and their dynamics in the annual training cycle. It was determined that the data obtained on the level of development of the speed-strength qualities of football players at the end of the competitive period emphasized the inconsistency with modern requirements for high-level players. It has been established that in the competitive period the dynamics of the indicators of the speed-strength qualities of the subjects using traditional training programs is characterized by a statistically significant decrease in the second part of the championship. The defining features of the experimental methodology for training football players are to increase the period of preparation from 20% to 45% of the partial amount of speed-strength exercises performed mainly in a repeated mode and the use of at least 80% of specialized in-game training cycles, 50% of which should consist of exercises of a speed-strength. Conclusions: The optimal ratio of exercises depending on their specialization at each of the three stages of the annual cycle is determined. The practical application of the experimental program made it possible to increase the amount of speed work in the training process and achieve a relatively stable speed of all jerks and accelerations during matches throughout the year.
Improvement of PVA-Glucomanan-Acrylamide Hydrogel as Base Material of Immobilization
Authors: Sari Repita , Mulijani Sri , Suhartini Meri
Published: June 2022

Hydrogel products are currently widely used in various fields, one of which is agriculture. Most hydrogels are made of synthetic polymers because they have good absorption but are not biodegradable. Glucomannan is a natural polymer that is able to absorb large amounts of water and biodegradable but it is difficult to maintain water content. One method to improve the mechanical properties of hydrogels is by modifying the hydrogels through the formation of an interpenetrating network (IPN) between natural polymers and synthetic polymers. In this study, the IPN hydrogel based on polyvinyl alcohol and glucomannan and acrylamide as a crosslinker was made by combining freeze-thaw and gamma irradiation techniques. The results showed that the hydrogel water absorption after immersion for 24 hours was 311.09% where the weight of glucomannan was 1 g and acrylamide was 0.75 g and the irradiation dose was 30 kGy. The result of cumulative release test of paraquat immobilized into the hydrogel was 12.00% within 10 days. This indicates that the PVA-glucomannan-acrylamide hydrogel can be used as a controlled paraquat release matrix so as to minimize the effect on the overuse of pesticides.
Plastic Composites Using Mango Leaf Waste for Cost Effectiveness and Green Environment
Authors: Satoto Rahmat , Ahmadi Rijal , Rusdiana Dadi , Ernawaty Erni , Syampurwadi Anung , Abdullah Akbar Hanif Dawam
Published: June 2022

Due to ecological considerations, natural biodegradation composites are widespread in tailoring plastics properties to specific needs. This work aims to demonstrate the available opportunity in using 100 and 140 mesh powdered mango leaf (PML) waste as a filler in polypropylene (PP) composites. Composites were produced via melt blending on a twin-screw internal mixer, with a different particulate size and a weight ratio of PML. Morphology, tensile, flexural, hardness, tear, puncture, thermal, and water absorption properties of the composites were assessed after 0, 1, 7, 14, and 28 days of water immersion. We found that the smaller particle size shows a better mechanical and water absorption of the composites, but not for thermal properties. The mechanical properties decreased with increasing PML content; however, these properties did not differ considerably from pure PP and other composites with natural filler. Besides, these polypropylene/PML composites showed excellent properties in water absorption.
Trophic activity of diplopods Rossiulus kessleri and Megaphyllum kievense under the influence of heavy metals and pesticides
Authors:   Oles Honchar Dnipro National University, Kozak V. M. , Brygadyrenko V. V. ,   Oles Honchar Dnipro National University
Published: June 2022

The monograph is devoted to research of influence of chemicals of agrogenic and technogenic origin on organisms of millipedes in laboratory conditions: various concentrations of heavy metals (ferrum, cuprum, lead, cadmium) and pesticides (Nurelle D, Actellic, Tilt, Falcon, Penncozeb, Thiovit Jet, Ridomil Gold, Bi-58, Biotlin, Omite, Roundup, Urahan Forte and Horus) on the change in body weight of Rossiulus kessleri (Lochmander, 1927) and Megaphyllum kievense (Lohmander, 1928) (Diplopoda, Julidae), on the intensity of feed consumption, the rate of excretion and the fractional composition of their trophic substrate. Concentrations of pollutants that cause diplopod death have been identified. Concentrations of investigated substances less toxic to millipedes have been established. For the first time in the laboratory conditions, we characterized the influence of different concentrations of iron and copper sulfates on the trophic activity of M. kievense. The regularity of toxic effects of lead and cadmium on the body of M. kievense was established and the stimulating effect of concentrations of herbicides Roundup and Urahan Forte on the rate of feed consumption by individuals of R. kessleri was revealed. The dependence of the change in body weight of R. kessleri millipedes on the concentrations of Horus fungicide was determined. Such concentrations of Omite, Penncozeb, Ridomil Gold, Falcon that stop feeding and reduce the intensity of the formation of R. kessleri excrements was established. Concentrations of insecticides Nurelle D and Actellic, which cause complete death of R. kessleri millipedes, were also reported for the first time. Laboratory experiments have shown a toxic effect of the concentration gradient of the studied pollutants on the organisms of diplopods M. kievense and R. kessleri. Diplopods can be indicators of environmental pollution. It is necessary to monitor industrial facilities and adhere to the regimes of use and restoration of buffer zones of industrial enterprises to reduce the negative impact of emissions of chemicals entering the environment from these enterprises. Diplopods are important for maintaining ecological balance in forest, steppe and meadow ecosystems.
Gamma-irradiated rosemary (Rosmarinus officinalis) dips treatment effect on quality of rainbow trout (Oncorhynchus mykiss) fillets during refrigerated storage
Authors: Rezanejad R. , Ojagh S. M. , Heidarieh M. , Raeisi M. , Alishahi A. R. , Rafiee G. R. , Mousavi S. H. , Nabizadeh S.
Published: June 2022

The effect of the gamma-irradiated extract of rosemary and butylated hydroxyanisole (BHA) antioxidant on sensory, chemical and microbiological changes of rainbow trout fillets stored at 4 ± 1°C was investigated for 16 days. The fillets were divided into: control (C), 750 and 1500 rosemary extract (RE) (immersed in 750 and 1500 ppm rosemary extract); 250 and 500 gamma-irradiated rosemary (GIR), (immersed in 250 and 500 ppm gamma-irradiated rosemary) and 250 and 500 BHA (immersed in 250 and 500 ppm BHA). The shelf life of fillets was reported to be 8 days for C, and 12 days for 500 GIR group according sensory, microbiological and chemical parameters. The pH, peroxide value (PV), total volatile basic nitrogen (TVB-N), free fatty acid (FFA), thiobarbituric acid (TBA), psychrotrophic counts (PTC), and total viable aerobic bacterial counts (TVC) values were 7.62 ± 0.21, 17.17 ± 1.6, 51.07 ± 1.1, 6.05 ± 0.13, 3.42 ± 0.18, 12.03 ± 0.19, and 13.16 ± 0.16 respectively for C group and also, 7.42 ± 0.16, 15.2 ± 1.7, 42.5 ± 1.5, 4.48 ± 0.39, 2.59 ± 0.15, 9.98 ± 0.15, and 10.5 ± 0.15 respectively for 500 GIR group. Finally, the following trend in effectiveness was reported: gamma-irradiated rosemary PBS extract > BHA > rosemary PBS extract.
Shifting beliefs and practices on translanguaging in an online master’s programme
Authors: Goodman Bridget
Published: June 2022

The purpose of this article is to present action research on translanguaging beliefs and practices in an online graduate education programme. The focal course is a master’s programme in an English-medium university in Kazakhstan, a country with two official languages (Kazakh and Russian), a trilingual education policy to develop proficiency in English alongside Russian and Kazakh, and a history of mixing Russian and Kazakh languages. The focal course shifted to an online teaching mode in Fall 2020 due to the Covid-19 crisis. The author has analysed data from a Zoom recording of a class lecture and a post-course anonymous survey to identify students’ beliefs and shifts in beliefs, along with influences on those beliefs. The findings suggest there are a constellation of influences online and offline that contribute to the positions and movement of student beliefs along different continua about translanguaging. One unique online contribution may be workshops and seminars in distant locales that might not otherwise be accessible for students face-to-face. Regardless of modality, providing active models of pedagogical translanguaging is recommended in future professional development courses.
La noción de derecho como presupuesto del diálogo interdisciplinar entre teólogos y canonistas
Authors: Errázuriz Carlos-José
Published: June 2022

Con el fin de mostrar en qué medida la noción de derecho es un presupuesto indispensable para un fecundo diálogo interdisciplinar entre teólogos y canonistas se presentan tres modelos de comprensión del derecho en su aplicación al derecho canónico, sobre la base de textos tanto de teólogos como de canonistas. Se trata del modelo del derecho como la ley emanada por la potestad de jurisdicción o como disciplina que ha de ser obedecida; el modelo de la institución, ordenamiento, estrutura o sistema; el modelo de la justicia y del derecho como lo justo. A continuación, reconociendo la legitimidad de todos estos modelos, se evidencian las ventajas del tercero para fundar y estimular la interdisciplinareidad entre teología y derecho canónico, de modo que la justicia y el derecho deben interesar a los teólogos, y el misterio de la Iglesia debe interesar a los canonistas.
Borated graphite cathodes for low-temperature aluminum electrolysis
Authors: Rudenko A. V. , Kataev A. A. , Neupokoeva M. M. , Tkacheva O. Yu.
Published: June 2022

Electrochemical boriding of the graphite plates in the potassium cryolite based electrolytes was studied. The boriding were carried out in a cell with vertical electrodes. The procedure included 2 stages: 1) electrolysis in the KF–AlF3–KBF4 melt (CR=1.3) at low current density (0.01–0.02 A/cm2), required for the boron reduction, at 700 and 750 °C; 2) electrolysis in the KF–AlF3–Al2O3 melt at higher current density (0.2 A/cm2), required for the aluminum reduction. The optimal conditions of electrodeposition for obtaining the borated wettable cathodes were determined. According to the SEM data, a continuous AlB2 layer with a thickness of 7–10 μm was formed on the graphite surface. The borated graphite was tested as a wetted cathode during the low-temperature aluminum electrolysis. Prolonged electrolysis in a vertical cell with the graphite anode and the borated graphite cathode was carried out in the KF–NaF(10 wt.%)–AlF3–Al2O3 electrolyte (CR=1.5) at 830 °C. After 100 h of electrolysis, the thickness of the AlB2 layer on the graphite surface was 5 μm, while the cathode surface was completely wetted with aluminum. Thus, we demonstrated the feasibility of using the borated graphite cathode as a wettable dripping cathode in the low-temperature aluminum electrolysis in the vertical cell.