bluuebunny/crossref_metadata_2025 huggingface dataset:
Etyka jako przedmiot nauczania w szkole w Polsce
Authors: Madalińska-Michalak Joanna
Published: March 2024

Artykuł prezentuje cząstkowe wyniki ogólnopolskich badań, poświęconych nauczaniu etyki. Omawia miejsce etyki w polskim systemie szkolnictwa i tendencje rozwojowe widoczne od momentu jej wprowadzenia (1991). Analizie poddano akty prawne z poziomu ustaw, rozporządzeń Ministra Edukacji Narodowej oraz, uzupełniająco wobec aktów prawnych, orzeczenia Trybunału Konstytucyjnego, regulujące zasady nauczania przedmiotu etyka oraz jego oceniania. Ważnym aspektem tych regulacji, ze względu na ich praktyczne konsekwencje, jest lokowanie etyki jako alternatywy dla przedmiotu religia. Przeanalizowane zostały również dane statystyczne, pozwalające w skali ogólnopolskiej ocenić rozwój zainteresowania przedmiotem etyka – przyrost liczebności szkół, w których realizowany jest przedmiot etyka, w zależności od etapu kształcenia oraz rodzaju szkoły, a także przyrost etatów przeliczeniowych przypadających na nauczycieli etyki. Ten ostatni wzrost, choć od roku 2014 skokowy, jest mimo wszystko w liczbach bezwzględnych niewielki; etyka pozostaje nadal przedmiotem niszowym. Na przestrzeni lat można obserwować poprawę jej statusu i wzrost społecznego zapotrzebowania; niemniej, obecne definiowanie etyki jako przedmiotu fakultatywnego sprawia, że poziom uczestnictwa wciąż pozostaje niewielki.
Assessment of Genetic Diversity in Cluster Bean [Cyamopsis tetragonoloba (L.) Taub]
Authors: U.S. Sushmitha , . Madhubala , Prajapati M.R. , Kyada A.D.
Published: March 2024

Background: Twenty six genotypes of cluster bean [Cyamopsis tetragonoloba (L.) Taub] were evaluated under randomized block design with three replications under the field condition to estimate the range of variability and diversity present in cluster bean genotypes for fifteen yield and yield contributing traits. Methods: The experiment was carried out at Research Farm, Department of Genetics and Plant Breeding, N. M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat in the year 2020 on twenty-six genotypes of cluster bean. Result: Correlation coefficients of fifteen traits estimates indicated positive and highly significant correlation of seed yield per plant with pods per plant, pods per cluster, pod yield per plant and seeds per plant, so these characters should be considered for selection for increasing yield in cluster bean. Gum content was negatively and significantly correlated with days to 50% flowering, seed yield per plant and 100 seed weight at genotypic level hence, selection for gum content might not be desirable for test seed weight and seed yield. Principal component analysis revealed significant variation among traits evaluated with the five principal components explaining approximately the 75.8% of the total variation with ³1 eigen values. Most of the variation contributed by the pods per cluster, pods per plant, gum content, pod yield per plant and seed yield per plant, these traits should be considered while selecting the cluster bean genotypes. The PCA- biplot revealed GAUG-1305, GG-1801, RGC-936 and RGC-986 as the most diverse genotypes for various traits. Cluster analysis distributed 26 cluster bean genotypes into three different clusters by UPGMA method. In the present investigation, the genotype GAUG-1305 recorded higher pods per plant, while GAUG-1502 for higher pod yield per plant, the genotype RGC-1003 for high pod length and RGC-936 exhibited higher pods per cluster, seeds per pod and seed yield per plant. So, these genotypes could be used in the future breeding programs.
Güzel Sanatlar Liselerinde Koro Eğitimi Vermekte Olan Koro Eğitimcilerinin Alan Yeterliklerine İlişkin Bir Değerlendirme
Authors: Özalp İrem , Çakan Uzunkavak Melike , Gül Gülnihal
Published: March 2024

Bu araştırmada güzel sanatlar liselerinde görev alan koro öğretmenlerinin alan yeterliklerinin ne düzeyde olduğunun tespit edilmesi amaçlanmıştır. Araştırmada nitel araştırma yöntemlerinden durum çalışması; örneklem grubunun belirlenmesinde ise amaçlı örneklem türlerinden maksimum çeşitlilik örneklemesi kullanılmıştır. Araştırmanın örneklem grubunu Türkiye’nin farklı bölgelerinde yer alan güzel sanatlar liselerinde görev yapan 11 koro eğitimcisi oluşturmaktadır. Araştırma verileri yarı yapılandırılmış görüşme tekniği ile toplanmıştır. Örneklem grubuna açık uçlu 8 sorudan oluşan görüşme formu ve 5 soruluk demografik bilgi formu uygulanmıştır. Görüşmeler sonucunda elde edilen verilerin analizinde içerik analizi tekniğinden yararlanılmıştır. Bu çalışmadan elde edilen bulgular doğrultusunda bazı katılımcıların kendilerini piyano hâkimiyeti, koro disiplini, koro-şef uyumu ve nefes-ses çalışmaları konusunda yeterli; bazı katılımcıların ise koro dersi hâkimiyetinde kısmen yeterli gördükleri belirlenmiştir. Araştırmadan elde edilen bulgular doğrultusunda katılımcıların koro dağarlarını yeterli buldukları, öğretmenler arası dağar paylaşımının ve sosyal ağların da söz konusu bu dağara katkı sağladığı belirlenmiştir. Koro öğretmenlerinin çoğunun kendilerini piyanoyu eşlik amacıyla kullanabilme becerisi, sahne hâkimiyeti, mesleki eğitimlere katılım ve eser hâkimiyeti açısından yetersiz; süreç yönetimi becerisi ve liderlik vasfı açısından ise yeterli buldukları tespit edilmiştir.
Özel Eğitim ve Rehabilitasyon Merkezinde Çalışan Özel Eğitim Alan Mezunu Öğretmenlerinin Pandemi Deneyimleri: Bir Odak Grup Tartışması
Authors: Gürgör Kılıç Fidan Güneş , Aksoy Funda
Published: March 2024

Covid-19 küresel salgın süreci eğitim alanında değişimleri beraberinde getirmiştir. Salgın sürecinin eğitim alanında getirdiği değişimler, özel eğitim süreçlerini, özel gereksinimli bireyleri ve özel gereksinimli bireylerle çalışan özel eğitim alan öğretmenlerini de birçok yönden etkilemiştir. Bu araştırma, özel eğitim ve rehabilitasyon merkezinde çalışan özel eğitim alan mezunu öğretmenlerin Covid-19 küresel salgın sürecinde deneyimlerinin belirlenmesi amacıyla gerçekleştirilmiştir. Araştırma, nitel araştırma yöntemlerinden olgu bilim modeline göre tasarlanmıştır. Araştırma alan mezunu altı özel eğitim öğretmeni ile odak grup görüşmesi tekniğiyle gerçekleştirilmiş ve görüşmeden elde edilen verilerin analizi sürecinde içerik analizi tekniği kullanılmıştır. Bulgularda, özel eğitim ve rehabilitasyon merkezinde çalışan özel eğitim alan mezunu öğretmenlerinin Covid-19 küresel salgın sürecinin özel ve mesleki yaşamlarında ve rehabilitasyon merkezlerindeki çalışma koşullarında değişikliklere yol açtığını ifade etmişlerdir. Bu süreçte mesleki, psikolojik ve maddi açıdan desteğe ihtiyaç duyduklarını belirtirken, aynı zamanda öğretmenler çalışma koşullarının ve özlük haklarının iyileştirilmesi gibi konularda önerilerde bulunmuşlardır.
RELATION BETWEEN TEACHING AND EDUCATION
Authors:   M.A., B.Ed., Saint Thomas College, Mahatma Gandhi University, Kottayam, India, Lipsy Mary
Published: March 2024

Choosing a school subject to specialize in is largely a personal choice that is going to be dependent on your interests as an individual and your strengths as a teacher. In addition, the school subjects that you end up teaching in the classroom may vary from year to year, so it's important to have a broad education as well as several specialties. When you start thinking about what you want to teach, you should consider the subjects you enjoy and are passionate about and the age and grade level of the students you plan to work with, as well as in-demand subjects. While you may be called upon to teach various subjects, these are all considerations and can impact your career path as a teacher.
THE HISTORY FORMATION OF THE SCIENCE OF ABAI STUDIES
Authors:   Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, Kazakhstan, Kurmangalieva Gulnur
Published: March 2024

The article will focus on the history of the formation of one of the fundamental branches of Kazakh literary science – Abay studies. An overview of the history of the formation and study of the history of Abay studies is made, scientific works that have shown the heritage of Abay in different years are analyzed. In the main part, a brief analysis of the history of Abai's knowledge, the study of the poet's heritage in general, a lot of scientifically valuable historical facts are analyzed. Through the work of scientists studying the history of Abay studies, the personality and civic identity of the poet are revealed. After studying the research of research scientists in research works and monographs, the importance and effectiveness of the modern discipline of Abay studies is shown. The history of the study and the stages of the formation of Abay studies are differentiated in modern times, when the degree of research of data on the heritage of Abay is increasing. Starting with M. Auezov, who brought Abay studies into the scientific system, based on the works of Y. Mustambayevich, K. Zhubanov, B. Kenzhebayev, K. Zhumaliyev, Z. Akhmetov, K. Mukhamedkhanov, M. Myrzakhmetuly, it is necessary to look at the history of the formation of Abay studies and analyze the works of the independence period from a new angle.
BRINGING THE BOYS BACK ON BOARD: AN EXPLORATION OF PRIMARY SCHOOL BOYS’ PERCEPTIONS OF THE WRITING PROCESS
Authors:   School of Humanities and Social Science, The IIE's Varsity College, South Africa, Mather Nazarana
Published: March 2024

In the past, boys have performed better than girls academically, however, recent research conducted internationally indicates that girls are achieving better results than boys (1). A reason for this improvement could be the role that language plays in all learning areas and, according to scientific research girls outperform boys in language acquisition because the language area of the brain in girls develops before the areas used for spatial relations, whereas the opposite is true for boys (2). The link between all learning is language. To succeed in any learning, learners must have the ability to communicate effectively in the language of learning and teaching. A study conducted in Minnesota confirms this as it was found that students who performed better in language also achieved better results in other learning areas (3). Francis and Skelton (4) state that there is a significant gap which favours girls in language and learning internationally. Epstein, Elwood, Hey and Maw (5) contend that girls’ most marked area of success at school has been in languages. An area in research that remains relatively unchartered is boys’ experiences in the writing classroom, which could contribute to our understanding of the underachieving boys’ phenomenon. This study sought to explore how middle school boys perceive their experiences in the writing classroom, the writing curriculum and their teachers’ teaching approaches. For this exploratory case study, boys from 2 schools participated in this study. They completed an activity-based questionnaire, writing lessons were observed and a sample of their writing with their teachers’ feedback was analysed using document analysis. Lesson recordings were transcribed, and the transcriptions were analysed with the observation schedule using thematic analysis, as were the boys’ responses to the questionnaire. It was found that the participating boys did not view language learning negatively, and whilst some of them struggled in the writing classroom, they did not view writing negatively either. It was concluded that teachers should cater for boys’ different learning needs and styles when planning their lessons. Some ideas for doing this could be providing choice in topics, making their lessons more engaging and exciting for the boys by including competitions and movement, and selecting themes and topics that the boys in their classrooms find interesting and relevant.
PRIORITIZING POSITIONING: AN EXPLORATION OF THE INFLUENCE OF TEACHER AND LEARNER POSITIONING IN THE WRITING CLASSROOM
Authors:   School of Humanities and Social Science, The IIE's Varsity College, South Africa, Mather Nazarana
Published: March 2024

Existing research shows that in South Africa, there are reasons for concern regarding the achievements of a large proportion of Grade 6 learners in language learning. The impact of this poor language achievement affects their success rates across learning areas and in higher grades. It has also been found that historically, Grade 6 boys have achieved and continue to achieve lower results than their female peers in national and international language assessments. However, boys’ language learning in the Intermediate Phase in South African schools is surprisingly under-researched, particularly their writing skills development. This study contributes to the existing field of research by using positioning theory to understand Grade 6 boys’ writing development. It was an interpretative, qualitative, theory-seeking case study that was bound by time (1 year), space (Grade 6 classrooms in two mainstream schools in KwaZulu-Natal) and theme (the boys and teachers positioning during the observed writing lessons). Data were gathered from classroom observations and were analysed from the perspective of positioning theory. A cycle of the Grade 6 writing programme was analysed. Although the teachers followed the same policy statement, it was found that their scaffolding approaches within the stages of the writing cycle differed significantly. It was concluded that there are significant links among three key elements: teacher knowledge, teachers’ and learners’ positioning in the writing process, and learners achieving the object of cognition in the stages of the writing cycle.
TEACHER INTERACTION FROM THE PERSPECTIVE OF HIGH SCHOOL STUDENTS
Authors:   PhD student, J. Selye University, Komárno, Slovakia, Dávid Szabó László
Published: March 2024

Based on Leary’s interpersonal model (Interpersonal Circumplex), Wubbels elaborated the scheme of interpersonal behaviour that was completed by questionnaires (Questionnaire on Teacher Interaction (QTI)). Our research involved 110 high school students. The aim of our present research is to determine the teacher's interaction style from the high school students' perspective using the QTI measurement tool (Questionnaire on Teacher Interaction). The purpose of the research is to assess how students see the teacher's classroom activities and how the teachers see themselves and see whether there is a difference between the teacher's own point of views and the students' point of view. The questionnaire contains 48 items. This measurement tool can serve as a valuable source of information for teachers in comparing their own self-evaluation with the student's perspective, which can obviously help their professional development.
TEA CEREMONY CULTURAL TEACHING PRACTICES FOR CHINESE UNIVERSITY STUDENTS: A PRELIMINARY STUDY FOR THE DEVELOPMENT OF ENGLISH TEACHING MATERIALS ON JAPANESE TEA CEREMONY
Authors:   Center for General Education, Tokyo Keizai University, Tokyo, Japan, Matsuzaki Carreira Junko , Shioda Naoko ,   Child Psychology, Tokyo Future University, Tokyo, Japan
Published: March 2024

This study is a preliminary study for creating teaching materials for the development of global human resources who can communicate their own (Japanese) culture, such as the tea ceremony, to the world in English. This study aims to clarify what foreigners are interested in, what they find important, and what they would like to know more about the tea ceremony to create teaching materials reflecting foreigners’ interests and concerns. The results indicated that the participating students enjoyed hands-on activities, such as actually preparing and drinking tea and learning how to eat wagashi (traditional Japanese sweets), even in an online environment. Furthermore, some students demonstrated interest not only in hands-on experiences but also in the history of the tea ceremony, distinctions between Japanese and Chinese tea cultures, and various aspects of the tea ceremony, including tea, tea utensils, traditional clothing (kimono), and the differences among tea ceremony schools. Based on these findings, it is recommended to create educational materials for Japanese university students learning the tea ceremony in English that cover not only the fundamental etiquette of the tea ceremony, but also provide comprehensive knowledge about the broader aspects of the tea ceremony.
ANALYSE DES DETERMINANTS D'ADOPTION DES PLATEFORMES E-LEARNING CHEZ LES ÉTUDIANTS DE LA FACULTE DES SCIENCES JURIDIQUES, ÉCONOMIQUES ET SOCIALES DE FES, MAROC
Authors:   Faculty of Legal, Economic and Social Sciences, Sidi Mohamed Ben Abdellah University, Fes, Morocco, Ouzif Hicham
Published: March 2024

L'étude propose une exploration approfondie des déterminants d'adoption des plateformes E-learning dans l'enseignement supérieur, en se concentrant sur la population spécifique des étudiants de la Faculté des Sciences Juridiques, Économiques et Sociales de Fès, Maroc. Cette recherche s'appuie sur le modèle UTAUT (Unified Theory of Acceptance and Use of Technology) de Venkatesh et al. (2003), intégrant des facteurs tels que, la performance attendue, l’effort attendu, l’influence sociale, et les conditions facilitatrices.La méthodologie, conforme aux recommandations de Venkatesh et al. (2003) sur l'application du modèle UTAUT, inclut la distribution d'un questionnaire à un échantillon représentatif d'étudiants de cette faculté, suivi d'une analyse statistique des réponses via le logiciel SPSS (Venkatesh et al., 2003). Les résultats visent à offrir des insights pratiques pour les décideurs éducatifs dans le contexte spécifique de la Faculté des Sciences Juridiques, Économiques et Sociales de Fès, Maroc. En résumé, cette recherche contribue à la compréhension des dynamiques entourant l'intégration de ces technologies, appliquant une approche basée sur le modèle UTAUT, spécifiquement adaptée à la population étudiante de la Faculté des Sciences Juridiques, Économiques et Sociales de Fès, Maroc.
HAVE THE BOYS GONE OVERBOARD? A STUDY TO INVESTIGATE THE ACADEMIC PLIGHT OF PRIMARY SCHOOL BOYS
Authors:   School of Humanities and Social Science, The IIE's Varsity College, South Africa, Mather Nazarana
Published: March 2024

Assessments conducted nationally and internationally have suggested that boys are achieving lower results than their female counterparts in all subjects in school. Historically, boys have performed better than girls academically. However, current research internationally into this situation has indicated that girls are outperforming boys in all subjects [see: Philippines (Fontanos and Ukampo, 2019); South Africa (Mather, 2019); Finland (Lahelma, 2021); Kenya (Muyaka & Malena); Pakistan (Ullah & Ullah, 2021); and Spain: (Sainz, Sole & Fabregues, 2021). Sainz, Sole & Fabregues (2021) state that in countries like Spain, boys are more likely to fail in school than girls, and during the last decade boys show a higher disposition to drop out of school earlier than girls. For instance, in 2019, 21.4% of the learners who dropped out were boys and 13% were girls (MEFP, 2020). In South Africa learners in Grades 3, 6 and 9 wrote the Annual National Assessments (ANA) in Home Language and Maths. The results found that girls performed better than boys in both subjects in all provinces and in all participating grades (DBE, 2013; DBE, 2014). This study sought to investigate the academic crisis of boys and foreground the gender gap in academic performance and was carried out as a desk study. Desk research or secondary research is a research method that involves using already existing data by conducting research through web searches, online platforms, industry reports, or even physical books (Gell, 2020). In this study rigorous research has been conducted using online platforms such as Ebscohost and Sabinet to source relevant, credible, and current research related to phenomenon that is being investigated. It was found that a gender gap in academic performance exists both nationally and internationally, and in all grades and subjects. It was concluded that some research has been conducted into this gender gap. However more research about causes of this underperformance and context-specific strategies that can be implemented to help bridge this gap, especially since the Covid19 lockdown, is needed to help bring the boys back on board.
LOW CODE SOLUTIONS FOR MANAGING THE INTEGRATION OF VIDEO, GRAPHICS AND ACTIVE LEARNING RESOURCES FOR ENGAGING CLASSROOMS
Authors:   Department of Complex and Intelligent Systems, Future University Hakodate, Hokkaido, Japan, Frank Ian
Published: March 2024

Modern educators have access to ever-growing options for the creation of learning resources to foster engagement and comprehension. This paper describes an implemented low-code platform tailored to the needs of managing resource deployment and development. The metaphor of horizontal and vertical “slicing” is adopted from the field of software development to motivate the use of interfaces for managing diverse content, including video, banner graphics for delivering “Q&A” responses to student feedback, and a database of classroom activities. The effective marshalling of resources can help with enhancing interactivity and responsiveness in classrooms, and efficacy of the system is discussed through evaluation results showing that classes delivered via the system are at the very top of university-wide evaluation criteria
DESIGN FOR INCLUSIVE COMMUNITIES: UNIVERSITIES AS DRIVERS OF SUSTAINABLE AND SOCIAL ENGAGEMENT NETWORKS IN LOCAL COMMUNITIES
Authors:   Research in Design and Art, ESAD-College of Art and Design, Blue Design Alliance, FCT (Fundação para a Ciência e a Tecnologia), Matosinhos, Portugal, Carneiro e Cardoso Ana Sofia
Published: March 2024

Communities and networks constitute complex socio-cultural ecosystems wherein participatory design and art practices assume a central role in fostering collaborative creativity and addressing collective challenges. The infusion of participatory design into these networks serves as a catalyst for social innovation, facilitating the active engagement of community members in co-creating their shared environments. Social design emerges as a strong tool, transcending disciplinary boundaries to harness the capacities of art and design in responding to intricate societal issues. This interplay between participatory design and art practices becomes a dynamic mechanism instigating positive transformations within communities, fostering diverse perspectives and inclusive solutions. University-level students can play a crucial role in the convergence of art and design activism, enhancing the impact of interventions with a socio-political dimension. As active participants in civic engagement through art and design, these students become vital advocates for social justice, contributing substantively to community empowerment and proactive determination of future trajectories. The genesis of the "O Bairro está IN(clusivo)" [The Neighborhood is IN(clusive)] project exemplifies this synergy. Promoted by ESAD — College of Art and Design and rooted in the principles of dream, imagination, fabulation, and self-build, the project endeavors to contribute to societal betterment through design and architecture, emphasizing positive transformation of Cruz de Pau's (social housing community in Matosinhos, Portugal) urban space through active community participation. Financed under the “Healthy Neighborhoods Program”, a governmental initiative to enhance the quality of life in vulnerable territories, the project focuses on Cruz de Pau—a neighborhood with diverse demographic profiles and varying economic and social needs. The project engages in workshops and participatory activities involving three generations —seniors, young people, and adolescents —, aiming to improve the surrounding space and leverage local knowledge. Through art and creativity, the project activates social and urban "regeneration," fostering participation and identification between inhabitants and their surroundings, while showcasing the effective transformative power of a united community.
LEVERAGING GENERATIVE AI FOR SUSTAINABLE DIGITAL EMPOWERMENT IN INDIGENOUS COMMUNITIES
Authors:   Information Systems, Indian Institute of Management, Shillong, IndiaInformation Systems, Indian Institute of Management, Shillong, India, Srivastava Sankalp
Published: March 2024

In an endeavour to tackle global inequality through digitalization, this study concentrates on utilizing the capabilities of Generative Artificial Intelligence (Generative AI) to empower Indigenous communities. The aim of this research is to investigate how Generative AI can mitigate socio-economic disparities by safeguarding indigenous knowledge and promoting social justice, all while being conscious of the historical biases faced by these communities. By employing innovative research tools that leverage Generative AI, the researchers delve into its applications within Indigenous contexts in India. Their findings underscore the potential of Generative AI in advancing cultural preservation, strengthening social cohesion, and establishing sustainable economic opportunities. This research sheds light on a transformative path toward digital empowerment and social justice for marginalized Indigenous communities
Local environment interaction-based machine learning framework for predicting molecular adsorption energy
Authors: Li Yifan , Wu Yihan , Han Yuhang , Lyu Qiujie , Wu Hao , Zhang Xiuying , Shen Lei
Published: March 2024

Machine learning (ML) models in materials science are mainly developed for predicting global properties, such as formation energy, band gap, and elastic modulus. Thus, these models usually fall short in describing local characteristics, such as molecular adsorption on surfaces. Here, we introduce a local environment interaction-based ML framework that contains a modified graph-based Voronoi tessellation geometrical representation, improved fingerprint feature engineering, and traditional ML and advanced deep learning (DL) algorithms. The precise characterization can be extracted using this framework for representing local information of adsorption of molecules on a surface. Using both traditional ML and advanced DL algorithms, we demonstrate remarkable prediction accuracy and robustness on 0D, two-dimensional (2D), and three-dimensional (3D) catalysts. Furthermore, it is found that the employment of this approach reduces data requirements and augments computational speed, specifically for DL algorithms. This work provides an effective and universal ML framework for various applications of molecular adsorption from catalysis, sensors, carbon capture, and energy storage to drug delivery, signifying a novel and promising avenue in the field of materials informatics. The implementation code in this work is available at https://github.com/mpeshel/LEI-framework LERN .
Dynamic Response of an Overhead Crane with Anti-Swing Controller in Driving Force and Energy Consumption
Authors: Gao Ruiqi , Gong Houhua , Du Xinyu , Meng Qingzhe , Wang Rong , Dong Mingxiao
Published: March 2024

Cargo sway caused by overhead crane operation not only reduces crane efficiency and safety but also affects the driving force and energy consumption of the operating mechanism. In this paper, a control scheme based on proportional derivative (PD) control and an input shaping technique is proposed to suppress cargo sway. First, the dynamics model of the crane system is established, and the mathematical expressions of the cargo sway, driving force, and energy consumption are derived. The accuracy of the dynamics model is verified through a comparison between the simulations and experiments. Then, a PD-IS controller is designed based on the dynamics model. Finally, the performance of the designed controller is simulated under four typical excitation signals and compared to that of the standard PD controller.
Experimental Validation of Reconstruction of Sound Source Radiation in an Underwater Half-Space Bounded by a Water-Air Interface
Authors: Chen Zhimin , Zhou Daren , Lou Jingjun , Peng Min , Xiao Yongxiong , Cheng Xiangle , Ru Zeyu
Published: March 2024

When a vibrating structure is located in a half-space bounded by a reflecting surface, the measured sound pressures are polluted by the reflection, so that they cannot show the actual sound radiation from the structure. The half-space spherical wave function expansion-based near-field acoustical holography approach is proposed to reconstruct the direct radiation from the sound source using the polluted sound pressures, which has been validated by numerical simulations. This paper deals with the experimental validation of this approach applied in an underwater half-space bounded by a water-air interface. The sound pressures measured in the half-space are used as the input data. The reconstructed sound pressures obtained are compared with benchmarks measured in a free space. The results indicate that the influences of the water-air interface reflection on the measured sound pressures can be greatly reduced in the entire frequency range investigated. The normalized relative reconstruction error introduced by the parameters of the hydrophone array and the water tank in the experiment is analyzed. The results of the experimental validation show that the proposed approach is promising for accurately measuring sound signals radiated from manned or unmanned vehicles or equipment underwater near a water-air interface.
ASSOCIAÇÃO ENTRE HORMÔNIO ANTI-MÜLLERIANO E POPULAÇÃO FOLICULAR OVARIANA: UMA REVISÃO SISTEMÁTICA
Authors: Brandão Fagundes Glaucia , De Lima Vasconcelos Mariane Gabriela , Ferreira Sousa Katia Regina , Marques  Silva  Resende Kathleen Vitória , Gualter Marcela , Arrivabene Neves Tábatta , Marques Mendes Barbara Karen , Gomes da Silva Cleidson Manoel , Franco de Souza Juliano , Ferreira Dias Francisca Elda , Vasconcelos Cavalcante Tânia
Published: March 2024

O hormônio Anti-Mülleriano (AMH) tem ganhado interesse crescente como um biomarcador da reserva folicular ovariana. Portanto, o presente estudo tem como objetivo apresentar uma revisão sistemática sobre os achados recentes relacionados ao AMH, com ênfase no seu papel como biomarcador da reserva folicular ovariana em diferentes espécies domésticas. Para tanto, foram realizadas pesquisas em bases de dados de bibliotecas eletrônicas científicas, em busca de artigos que abordassem a presente temática. Os estudos encontrados foram analisados e submetidos a critérios de inclusão e exclusão que permitiram realizar a seleção daqueles que atendiam aos objetivos do presente estudo. No total, foram encontradas 69 publicações. Destas, 15 estavam de acordo com os critérios estabelecidos e foram utilizadas para o embasamento deste estudo. Os resultados desta revisão sistemática demonstram que a dosagem dos níveis séricos de AMH em associação com a população de folículos antrais (PFA) constitui um parâmetro promissor para estimar o potencial reprodutivo de diferentes fêmeas domésticas. Entretanto, devido à falta de validação em grandes rebanhos e ausência de valores preditivos confiáveis para cada espécie, o potencial do AMH ainda é subutilizado.
O PAPEL DO BIÓLOGO NA CONSCIÊNCIA AMBIENTAL: O LIXO EM SEU COTIDIANO: UMA ABORDAGEM NAS CIÊNCIAS BIOLÓGICAS
Authors: Santos Falcão Milena , Schirato Gonçalves Barbara , Pereira dos Santos Brenda , Antônio Ribeiro de Souza Gustavo , Alencar Soares Larissa , Soares de Castro Larissa , Martins Rodrigues Nathália , Alves dos Reis Andressa , Lagares Ferreira Silva Kellen , Simone Seibert Carla , Da Silva Pinto Mac David , Nilton Alves Pereira Thiago
Published: March 2024

O presente trabalho relata a experiência dos monitores do Programa de Inovação Tecnológica (PIIP), do curso de Ciências Biológicas da Universidade Federal do Tocantins/UFT- Campus Porto Nacional durante as atividades do programa. A temática trabalhada foi “o lixo em nosso cotidiano” com foco em desenvolver questões lógico-matemáticas (relação dos números, gráficos, tabelas, etc) com os acadêmicos do curso e a sensibilização sobre a conservação ambiental. O trabalho realizado foi totalmente remoto. Desenvolveu-se uma balança caseira para pesar o lixo orgânico e o lixo inorgânico foi quantificado por unidade (plástico; papel; metal; e vidro). A coleta de dados foi realizada durante um mês, na casa de 6 acadêmicos do primeiro período do curso, e os resultados foram organizados e analisados com o emprego de estatística descritiva. Com relação ao lixo inorgânico foram coletados 1130 itens e as categorias mais quantificadas foram: plástico (52,12%) e papel (34,96%). Para a matéria orgânica foram pesados 62 kg de resíduos alimentares. Os resultados destacam o grande potencial de produção de lixo das residências e a importância de conscientizar sobre as possibilidades de reciclagem e/ou coleta seletiva dos mesmos. Esses resultados foram trabalhados com os estudantes do primeiro período, estimulando o entendimento das ferramentas matemáticas na Biologia, bem como, em pensamento crítico a respeito da coleta seletiva.
The Identification of Acetic Acid-Ethanol Mixture Using Gas Sensor Array and Ensemble Regression
Authors:   Department of Chemistry, ITS, Surabaya, Indonesia, Suprapto Suprapto , Ni'mah Yatim Lailun , Harmami Harmami , Ulfin Ita , Ardiyanti Annisa
Published: March 2024

Identification of acetic acid-ethanol mixtures using a commercial gas sensor array equipped with ensemble regression has been carried out. The gas sensor analysis was simple, rapid, and fast since it did not require any sample preparation. A quantitative analysis of the acetic acid-ethanol mixture was carried out to determine the sensitivity and selectivity of the sensor in distinguishing the concentration of the acetic acid and ethanol mixture. This study focuses on the coefficient of determination of 80% of the calibration data set and recovery of 20% of the testing data set. The models showed excellent performance,specifically, the Bagging and Random Forest r2 for the ethanol calibration data reached 0.91 and 0.94, respectively. The corresponding ethanol test recoveries were 99.95% and 97.84%, indicating the robustness of the model in accurately predicting ethanol concentration. Acetic acid test recoveries were 100.56% and 101.38% with r2 of 0.89 and 0.93 for Bagging and Random Forest regression, respectively. Hence, the commercial gas sensor array equipped with ensemble regression can be applied to the quantification of the acetic acid – ethanol mixture and demonstrate opportunities for the practical use of this gas sensor array in analyzing real samples, i.e. human breath or environmental monitoring samples.
Detection of Microplastics and Heavy Metals in Famous Edible Molluscs in Can Gio Biosphere Reserve of Vietnam
Authors:   Faculty of Pharmacy, University of Medicine and Pharmacy at Ho-Chi-Minh City, Vietnam, Khuyen Vo Thi Kim , Kim o Thi Thien
Published: March 2024

Can Gio, designated in 2000, is the first Biosphere Reserve of Vietnam. In recent years, local agriculture, tourism, households, nearby industrial zones, and maritime transport have released substances into rivers flowing through Can Gio Mangrove to the East Sea and transported into creatures. This study aims to investigate microplastics and heavy metals in the famous seafood of Can Gio. A Raman microscope was used to identify microplastics from the tissue of oysters, grease snails, and clams after enzymatic treatment with trypsin. Heavy metals were quantified with ICP-MS after acidic treatment. As a result, microplastics were found in almost all samples, even up to 10 in a random individual of bivalve. Fibers dominated, especially from 30 to 150 µm long. The metal with the highest content was zinc, followed by copper, especially in oysters. Non-essential metals were also present in the soft tissue in the order As > Pb > Cd. The accumulation of metals in Can Gio’s molluscs was generally lower than in other regions and still in the allowed range for consumption of Vietnamese Standard. Although there have not been any Vietnamese regulations on the permissible level of microplastics for consumption, regular seafood intake will increase the risk of chronic poisoning and unknown disorders caused by the accumulation of microplastics and heavy metals.
Adsorption of Remazol Blue And Indigosol Yellow Mixed Dyes Using Bidara Arab Leaves (Ziziphus spina-christi)
Authors:   Chemistry Department, Faculty of Sciences and Analytica Data, Institute Technology Sepuluh Nopember, Indonesia, Kurnia Mega , Suprapto Suprapto , Ni'mah atim Lailun
Published: March 2024

In this study, the adsorption of Remazol Blue and Indigosol Yellow using Bidara Arab leaves (Ziziphus spina-christi) as adsorbents was investigated through batch adsorption. The experimental parameters included contact time, adsorbent mass, initial concentrations, and pH. UV-Vis spectrophotometer was employed to measure the adsorption results at the maximum wavelength of each dye. The research was conducted in triplicate, and a t-test, "Paired Two Sample for Means", with a standard deviation <2% was employed for statistical analysis. Optimal adsorption conditions were achieved at a contact time of 45 minutes, an adsorbent mass of 45 mg, an initial concentration of 30 ppm, and a pH of 3. The results indicated that Bidara Arab leaves effectively reduced the concentration of the mixed dyes with %decoloration up to 99,79% on Remazol Blue and 99,50% on Indigosol Yellow.
Green-AgNPs modified membrane for monitoring mercury ions in cosmetic sample using pre-concentration assisted voltammetry technique
Authors:   Universitas Islam Indonesia, Fadillah Ganjar , Inayatussholeha Eka Nurdina , Hidayat Rahmat
Published: March 2024

The carcinogenic and teratogenic properties of mercury have driven the necessity for the development of highly sensitive methods capable of detecting even trace amounts of the element. In response to this need, an analysis technique has been established for mercury ions, employing preconcentration methods utilizing filter paper modified by silver nanoparticles (AgNPs) and 3-Amino propyl trimethoxy silane (APTMS). This method allows for the detection of mercury ions through the voltammetry technique, ensuring accurate and reliable results. Upon conducting analyses using this method, it was found that the tested cosmetic samples were free from Hg2+ ions, indicating the absence of mercury contamination in the cosmetics under investigation. The correlation coefficient derived from the graph of the analysis results stands at an impressive value of 0.9976, affirming the strong relationship between the measured concentrations and the actual mercury content. Additionally, the method demonstrates excellent sensitivity, as evidenced by the low limit of detection (LOD) value of 0.0483 mM and the limit of quantification (LOQ) value of 0.1611 mM.
Determination of Ethanol in Vinegar and Beverage by Gas Chromatography: A Validated Method for Halal Verification
Authors:   Universitas Islam Indonesia, Yulirohyami Yulirohyami , Wijaya Aprisilia Risky , Ruwindya Yorfan
Published: March 2024

Validation of the method for determining ethanol in vinegar and beverages has been carried out in the linearity range of 0.05-1% using GC-FID. This research was carried out using an internal standard solution and without an internal standard solution. The research aims to validate the linearity of ethanol determination at low concentration levels. This validation is useful to ensure that the ethanol test method in the sample can be detected at low concentration levels. In the halal authentication process, the maximum limit for ethanol content is 5%. The method validation results confirm that in the concentration range 0.05-1% it has good linearity with a correlation coefficient (R) without the addition of internal standards and with the addition of standard solutions being 0.9972 (R2=0.9943) and 0.9952 (R2=0.9905). The results of the analysis of variance (ANOVA) test with a 95% confidence interval and 9 degrees of freedom F-count (0.0141) < F-critical (0.3146) show that the range 0.05-1% corresponds to the limit of linearity. The results of the ANOVA test with a 95% confidence interval with df=6 show the F-test value (0.0879) < F-critical (0.2334) indicating that the two proposed methods have high precision and no significant differences. Both methods also have high accuracy and no significant differences in accuracy as shown by the results of the ANOVA test with a 95% confidence interval and degrees of freedom = 6 showing the F-test value (1.5204) < F-critical (4.2839). It is recommended that the results of this validation be useful in the halal verification process for vinegar and beverage products.
Detection of Adulterants Metanil Yellow in Turmeric Powder Using Fourier Transform Infrared (FTIR) Spectroscopy Combined with Chemometrics OPLS-DA and PLS
Authors:   Department of Pharmacy, Faculty of Medicine, Brawijaya University, Malang, Indonesia, Dia Syahril Maulid , Putri Anggita Rosiana , Muchlashi Luthfi Ahmad
Published: March 2024

Turmeric powder (Curcuma longa L.) is often used for food coloring and flavoring. The high demand for turmeric powder has led to adulteration, one of which is metanil yellow. This study aims to detect metanil yellow dye in turmeric powder using Infrared Spectroscopy (FT-IR) and Chemometrics. The chemometrics model was built by preparing turmeric powder and metanil yellow in the concentration range of 0-50% (w/w). Data was processed using multivariate calibration using OPLS-DA (Orthogonal Partial Least Squares Discriminant Analysis) and PLS (Partial Last Square). The results obtained from OPLS-DA processing of market samples 1 and 2 are estimated to be pure turmeric powder, and samples 3 to 10 are adulterated. From the PLS results, the best calibration model was obtained at wave numbers 1199-539 cm-1 with R2 values for calibration and validation of 0.9967 and 0.9970, respectively, with RMSEC of 2.48 and RMSEP of 6.35. The PLS results showed that in sample 3 containing metanil yellow, in samples 4 to 10, no metanil yellow was detected. The ingredients added were not metanil yellow. It was concluded that FTIR combined with chemometrics could detect the metanil yellow in turmeric powder.
In Vitro Activity of Ethanol Extract of Rimbang Fruit (Solanum ferox) as an Active Ingredient in Sunscreen Preparations
Authors:   Universitas Palangka Raya, Indonesia, Kalalinggi Septaria Yolan , Rasidah Rasidah , Yuliana Yuliana
Published: March 2024

Solanum ferox is a typical Central Kalimantan plant widely used by Dayak’s community as a vegetable. The study aims to determine the ethanol extract of sour eggplant activities by measuring its SPF in vitro and identifying secondary metabolite contents. The sour eggplant is extracted by maceration using 96% ethanol solvent and then bound with an evaporator. The secondary metabolite groups of ethanol extract were identified using phytochemical screening. The identification results indicate the presence of flavonoid, terpenoid, steroid, and phenolic compounds. Then, the ethanol extract was fractionated with a water solvent, and its functional cluster was identified using the IR spectrum. IR spectral identification results indicate the presence of OH, C-O, C=C olefin, C -O ether, and aliphatic CH functional groups. (CH2 and CH3) SPF values were determined by measuring the absorption of ethanol and water extracts in vitro using UV-Vis spectrophotometry at UV-B wavelengths of 290-320 nm. In vitro testing has been conducted as a preliminary test in developing a sunscreen product (active substance). The SPF values of ethanol extract and water from weighted fruit extract in sequence are 40 and 23 at a 10% concentration with ultra-category.
Kinetics and Thermodynamics Equilibrium of Nickel Metal Ions Sorption onto Carbon Nanofibers Irradiated by Ultrasonic Energy
Authors: Alimin Alimin , Ramadhan La Ode Ahmad Nur , Ahmad La Ode , Fahmiati Fahmiati , Ismail Darwin , Zaeni Ahmad , Muzakkar Muhammad Zakir , Intan Intan , Agusu La , Kartini Indriana , Santosa Sri Juari
Published: March 2024

In this work, we investigated the effects of the heavy metal initial concentration and the pH on the sorption of heavy metal ions onto carbon nanofibers using the liquid phase adsorption technique under ultrasonic energy irradiation. These data were then used to study thermodynamic aspects such as sorption capacity and energy and kinetic parameters such as kinetic model, reaction order, and rate constant of heavy metal sorption on carbon nanofibers. We found that the increase of the heavy metal (nickel) initial concentration was proportional to the amount of heavy metal adsorbed onto carbon nanofibers. The highest uptake of the heavy metal ions' amount onto carbon nanofibers in equilibrium (qe) was 244.00 mg.g-1, achieved at the pH of 8. Langmuir and Freundlich's isotherms were used to find the best-fitted isotherms model. The Langmuir isotherm best fits the sorption equilibrium of the heavy metal ions on Carbon nanofibers. Bothipseudo-first and pseudo-second orders studied the sorption and kinetic parameters of heavy metals on carbon nanofibers. The sorption kinetics model was fitted to the pseudo second-order. Based on the value of Gibbs free energy, the metal ions' sorption onto carbon nanofibers occurs spontaneously.
Studi Optimisasi dan Kinetika Adsorpsi Silika dari Lumpur Lapindo dengan Metode Sol-Gel Menggunakan P123-Putih Telur
Authors: Ulfa Maria , Solikah Anisa Ayu , Fadhilah Zahra Ayu , Setiarini Ida , Syadida Zulfana Qoulan
Published: March 2024

Dalam penelitian ini, silika yang disintesis dari Lapindo lumpur dengan metode sol-gel menggunakan P123-putih telur dan berhasil diterapkan sebagai adsorben ibuprofen. Konsentrasi awal, berat adsorben, pH dan suhu diterapkan untuk mengoptimalkan kondisi reaksi eksperimental utama menggunakan metode batch. Optimalisasi ini didasarkan pada maksimalisasi pengurangan ibuprofen menggunakan silika dari Lumpur Lapindo. Penelitian ini menunjukan bahwa dua parameter yang paling relevan untuk adsorpsi ibuprofen adalah suhu adsorpsi dan dosis adsorben. Berdasarkan model adsorpsi, kondisi optimal untuk adsorpsi ibuprofen maksimum ditentukan selama 60 menit sebagai 100 mg/L, 45±0,5 ℃, pH 5 dan dosis katalis 0,03 g, menghasilkan persentase pengurangan adsorpsi masing-masing 94,88; 96,04; 95,57; dan 96,65%. Kinetika adsorpsi ibuprofen juga dievaluasi dan hasil eksperimen dijelaskan dengan baik menggunakan pseudo pertama dan model orde kedua semu. Studi kinetik yang menggunakan analisis regresi linier mengungkapkan adsorpsi cocok dengan pseudo kinetik orde kedua dengan nilai energi aktivasi adalah 0,441 kJ/mol dan faktor pra-eksponensial adalah 1,21 L2‧mol-2‧min-1 yang mengonfirmasi bahwa silika dari Lumpur Lapindo bisa menjadi alternatif yang baik untuk menghilangkan ibuprofen melalui adsorpsi.

Optimization and Ibuprofen Kinetical Adsorption Study of Silica from Lapindo Mud (SLM) by Sol-gel Method. This study successfully applied silica synthesized from Lapindo mud by sol-gel method using P123-white egg as an adsorbent for reducing ibuprofen. An initial concentration, adsorbent weight, pH, and temperature were applied to optimize the main experimental reaction conditions using batch methods. This optimization was based on maximizing ibuprofen removal of the silica from lapindo mud samples. The results show that the two most relevant parameters for ibuprofen adsorption are the adsorption temperature and adsorbent dosage. According to the Kinetics model, the optimum condition for the maximum ibuprofen adsorption was determined during 60 min at ibuprofen concentration of 100 mg/L at 45±0.5 °C (pH 5) with catalyst dosage of 0.03 g, resulting in 94.88, 96.04, 95.57, and 96.65% ibuprofen removal, respectively. The kinetics of the ibuprofen adsorption was also evaluated, and the experimental results were well described using a pseudo-first and pseudo-second-order model. The kinetic studies using linear regression analysis revealed that the adsorption fits pseudo-second-order kinetic with the value of the activation energy of 0.441 kJ/mol and the pre-exponential factor of 1.21 L2‧mol-2‧min-1, confirming that the silica from Lapindo mud is a good alternative for removal ibuprofen through adsorption.