bluuebunny/crossref_metadata_2025 huggingface dataset:
Euphorbia resinifera propolis administration improves memory ability in high fructose treated rats
Authors: Kherrab Imane , Chakit Miloud , Brikat Sara , El-Arbaoui Marouane , Mesfioui Abdelhalem , Elhessni Aboubaker
Published: December 2024

Propolis, a substance crafted from plant resin by honeybees, serves to maintain a hygienic environment within their hives and has been linked to improved cognitive function due to its antioxidant properties. This study aims to assess the influence of high fructose (HF) during prepuberty and adolescence and the Euphorbia resinifera propolis supplementation on memory in adult rats. 24 Wistar rats were distributed into three groups of 8 rats. G1 control group, don’t receive any treatment; G2: F, group subjected to high fructose (23%) for 6 weeks and G3; F-MEP received fructose duringsix weeks and after received a 15-day treatment of 200mg/kg/day of Euphorbia resinifera propolis methanolic extract of (F-MEP). High fructose administration during prepuberty and adolescence resulted in long-term memory loss and impaired working memory in adult rats. Euphorbia resinifera propolis supplementation significantly increased the recognition index (p < 0.01) compared to the group F, and was able to protect against this effect on F-induced memory (p < 0.01) by a decrease in the synthesis of attacking factors and/or an increase in the production of protective factors. These findings suggest that propolis extract, with its antioxidant compounds, improves memory performance and justifies its use in traditional medicine by the Moroccan population. Euphorbia resinifera propolis supplement could serve as a therapeutic agent for memory disorders caused by fructose feeding.
Determining the anticancer effect of Gefitinib-loaded NLCs through investigating the inflammatory cytokine (JAK-STAT) pathway
Authors: Intakhab Alam Mohammad , Mohan Syam , Ashafaq Mohammad , Almoshari Yosif , A. Makeen Hafiz , Hussain Sohail
Published: December 2024

This research aims to investigate the feasibility of using nanostructured lipid carriers (NLC) loaded with Gefitinib to treat colorectal cancer by focusing on the inflammatory cytokine pathway, particularly on the JAK-STAT pathway. As part of the study, Gefitinib-loaded NLC (Nano-GEF) was prepared by homogenization method. Colorectal cancer cells HCT116 were subjected to a series of tests to determine cytotoxicity, including morphological assessment, MTT assay, DNA fragmentation analysis, evaluation of interleukin cytokines, and JAK-STAT pathway expression. According to the study's results, Nano-GEF has far stronger anti-cancer effects than the pure drug (GEF) against cells of colorectal cancer. Morphological studies and cytotoxicity assays confirm the selective action of Nano-GEF on cancer cells. Furthermore, the expression of pathways mediated by JAK-STAT provides further evidence of Nano-GEF's effectiveness as a potential anti-cancer therapy. By focusing on the inflammatory cytokine pathway (JAK-STAT), this research shows that gefitinib-loaded NLC might be a good technique to treat colorectal cancer. Based on the results, Nano-GEF has the potential to be an effective anti-cancer method that is more selective than the pure drug. These findings open the door to the creation of innovative pharmaceutical products as well as the possibility of applications in the assessment and treatment of cancer.
Simultaneous estimation of Flupenthixol and Esitalopram in bulk drug and tablet dosage form by UHPLC method
Authors: Godge R.K. , Patil R. A. , Mhakse S.B. , Gore R.R.
Published: December 2024

The objective of this study is to novel ‘high performance liquid chromatography’ method this is sensitivity and accurates, with focus on specificity, for measuring the amount of Flupenthixoland Escitalopramin bulk dosage form and pharmaceutical formulation. Methods: Drug and its impurities were separated chromatographically using C18(AGILENT) coloumn together with a methanol-based mobile phase and 0.1% TFAA (pH4.2 WITH TEA) at a flow rate of one milliliter per min in the ratio 65;35, with UV detection 235nm. Results: With good resolution, Flupenthixol and Esitalopram were successfully eluted during the retention period off 3.044 and 4.118 min, Respectivaly. The described method showed a linear relationship across the flupenthixol concentration range. (200-100ug/ml) and esitalopram (1-5 g/ml). Flupenthixol and Esitalopram were found to have 100%–102% recoveries. When validating the method, the ICH guidelines were adhered to. Excellent precision, accuracy, linearity, specificity, sensitivity, and robustness were demonstrated by the validation results. Conclusion: The proposed method effectively separated and quantified escitalopram and flupentixol. This developed technique is totally analysissure suitable for routine analysis ofEscitalopram and Flupenthixol in dosage of pharmaceuticals formulation.
Screening of Macrophytes on the basis of Efficiency of Industrial Wastewater Treatment in Constructed Wetland
Authors: Kumar Mahish Pramod , Madhariya Garima
Published: December 2024

Improper wastewater treatment and sanitation processes can negatively affect the environment and public health. Due to the problems with global water shortages, it is essential to take non-conventional water resources into account to facilitate the production of pure fresh water. To provide enough fresh water in the coming decades, wastewater treatment and recycling techniques will be crucial. Due to the limited availability of fresh water and over 70% of it is used for irrigation. Therefore, there is great potential for using recycled water for agricultural irrigation, particularly in cases where minerals like phosphorus and nitrogen are crucial for plant growth. Wetlands are shown to be one of the most suitable treatment options for reusing urban wastewater for irrigation in terms of pollution removal, with high reliability and energy required. Macrophyte species, substrate, hydrology, Surface flow rates, effective food systems, abundance of microorganisms, and temperature all play a role in wetlands ecology and efficiency in waste-water treatment. Organic matter can be effectively removed by constructed wetlands. The result showed that Pistia stratiotes, Alternanthera philoxeroides, Eichhornia crassipes, Polygonum persicaria, Ludwigia adscendens, Marsilea quadrifolia, Nymphoides cristata, and Ipomoea aquatica have the efficiency to reduce BOD up to 86.36%, 77.45%, 88.23%, 76.33%, 77.06%, 77.06%, 81.98%, 83.18%, and 78.26% respectively and COD removed up to 79.3%, 67.5%, 77.98%, 71.29%, 71.6%, 70.86%, 75.4% and 68.2% respectively In present study evaluated that Eichhornia crassipes have higher efficiency for contamination removal as compared to other seven macrophytes.
RP-HPLC Method Development and Validation of Lamivudine, Zidovudine and Nevirapine in Bulk and Dosage form using UV Detector
Authors: Shinde G. S. , Jadhav R. S. , Godge R. K , Kote R. B. , Tambe V.B.
Published: December 2024

The Study aimed to develop a RP-HPLC method for simultaneous estimation of Lamivudine, Zidovudine and Nevirapine using UV detector in bulk and doage form. Methods: Inertsil BDS 3V C18 column (5µm, 150mm × 4.6mm) as stationary phase and 0.01M 1-octane Sulphonic acid: Methanol (50:50v/v, pH2.6) as mobile phase. The mobile phase was maintained at a flow rate of 1ml/min,run time 15 min and detection was carried out at 270 nm. Result: Lamivudine, Zidovudine and Nevirapine were found to be linear in the concentration range of 75-225µg/ml, 150-450µg/ml and 100-300µg/ml respectively. The result of % assay of marketed formulation was found as 101.93±0.1527, 100.86±0.2021and 94.2±0.1527 for Lamivudine, Zidovudine and Nevirapine respectively. Accuracy of the method was determined by performing recovery study and the result were found in the range of 100.9-101.4%, 100.1-100.7% and 99.0-99.9% for Lamivudine, Zidovudine and Nevirapine respectively. Percentage RSD of precision study of these drugs were found less than 2 percent which indicated good precision of the developed method. Conclusion: The proposed method was validated for linearity, accuracy, precision, and robustness. The proposed method is simple,rapid.precise and reproducible hence can be applied for routine quality control analysis of Lamivudine, Zidovudine and Nevirapine in pharmaceutical dosage form.
RP-HPLC Method Validation for Estimation of related Substances of Empagliflozin
Authors: Chandarana Chandni , Panchal Aarti , Modi Vishal
Published: December 2024

In this study, researchers aimed to develop and validate a reproducible and precise Reverse Phase High-Performance Liquid Chromatography technique for accurately estimating a chemical related to empagliflozin. The primary objective was to establish a method suitable for quality control of empagliflozin batches and its impurities. To achieve this, effective chromatographic separation has done by using two mobile phases: Mobile phase A, which comprised water adjusted to pH 3.9±0.5 using glacial acetic acid, and Mobile phase B, consisting of pure acetonitrile. The separation was conducted on a Phenomenex (Kinetex) C18 stationary phase (250mm × 4.6mm, particle size 5μm) at a flow rate of 1.5mL/min. Detection occurred at 240nm at 50°C. An injection volume of 50μL was used for analysis. Empagliflozin was quantified at a concentration of 0.03g/mL, while impurities were measured between 0.052-0.090g/mL. The results indicated successful chromatographic separation and accurate quantification. The proposed method demonstrated its efficacy for quality monitoring of bulk samples containing Empagliflozin, ensuring the reliability and consistency necessary for routine quality control purposes in the pharmaceutical industry.
Ways to counter extremism in social networks
Authors:   Lipetsk State Technical University, Kasenov Askar D. , Fomicheva Tatyana S. ,   Lipetsk State Technical University
Published: December 2024

Extremism is one of the global problems of modern society. He has especially actively penetrated social networks, which are characterized by anonymity, permissiveness and impunity. Representatives of extremist associations have the ability to recruit people from anywhere in the world, using various methods of intimidation and intimidation. This article analyzes the problem of extremism in social networks and possible ways to counter this phenomenon. At the same time, it is important to understand that at present it is extremely difficult and practically impossible to eradicate extremism on social networks, which is due to the peculiarities of the global Internet. It is used by people from different parts of the world and the laws of a certain country may not apply to them. At the same time, it is easy to create new resources after blocking the previous ones. Social networks open up hundreds of opportunities and workarounds for leaders of extremist groups. In addition, the article analyzes existing research on ways to counter extremism online and evaluates the degree of their effectiveness.
The political nature of economic security: approaches to research
Authors:   Lipetsk State Technical University, Novichkov Alexey V.
Published: December 2024

This paper describes the essence of the concept of "economic security", characterizes approaches to the study of economic security. Economic security is associated with certain conditions and factors that require sufficient volumetric and structural parameters that reveal the essence of economic security and can serve as a guarantee of the protection of national interests. Approaches to the study of economic security can be divided into the following groups: changing the state of the national economy by increasing its competitiveness and economic security is seen as an economic benefit. The results of the review and analysis of scientific papers on economic security allow us to confirm the relevance and novelty of studying economic security on the basis of the main documents on this topic, in addition, they are a necessary basis for conducting a comprehensive study of key economic issues. These aspects determine the practical significance of this study, which consists in the possibility of using the results obtained by individual companies in their work.
Hubungan Keharmonisan Keluarga dengan Motivasi Belajar Peserta Didik Kelas XI di SMA Negeri 1 Luwuk
Authors:   Bimbingan dan Konseling, Universitas Tompotika Luwuk, Indonesia, Mangerang Faizah
Published: December 2024

Penelitian ini bertujuan untuk mengetahui hubungan keharmonisan keluarga dengan motivasi belajar peserta didik. Penelitian ini menggunakan metode kuantitatif. Sampel dalam penelitian ini adalah siswa kelas XI di SMA Negeri 1 Luwuk. Pengambilan sampel dilakukan dengan teknik simple random sampling, pengumpulan data adalah dengan menyebarkan angket kepada siswa sebagai sampel penelitian. Analisis yang digunakan adalah uji normalitas, uji linearitas, dan uji korelasi product moment. Hasil penelitian menunjukkan bahwa nilai koefisien korelasi (r) = 0,39242 adalah angka positif. Hal ini menunjukkan pengaruh keharmonisan keluarga terhadap motivasi belajar di SMA Negeri 1 Luwuk adalah positif. Adapun Nilai KD = 15,4% menunjukan besar pengaruh keharmonisan keluarga terhadap motivasi belajar di SMA Negeri 1 Luwuk sebesar 15,4%. Sedangkan nilai Thitung = 2,45, Dengan derajat kebebasan (db) = 35 – 2 = 33 dan taraf signifikansi 0,05 = 1,69 sehingga, Thitung lebih besar dari pada Ttabel atau 2,45 > 1,69, maka korelasi yang terjadi adalah adanya hubungan keharmonisan keluarga dengan motivasi belajar peserta didik kelas XI di SMA Negeri 1 Luwuk Dengan demikian hipotesis diterima karena Thitung lebih besar dari Ttabel.
Efektivitas Model Pembelajaran REACT Berbasis Contextual Teaching and Learning Terhadap Kemampuan Pemahaman Konsep Matematis Siswa Pada Materi Relasi dan Fungsi
Authors:   Pendidikan Matematika, Universitas Tompotika Luwuk, Indonesia, Suyantana I Nyoman
Published: December 2024

Penelitian ini bertujuan untuk mengetahui keefektifan model pembelajaran REACT berbasis pendekatan Contextuall Teaching and Learning (CTL) dalam pemahamani konsep matematis siswa pada materi relasi dan fungsi. Jenis penelitian yang digunakan adalah studi pre-eksperimental dimana peneliti bertindak sebagai guru dalam proses pembelajaran. Subjek penelitian adalah siswa kelas VIIIA. Indikator yang digunakan meliputi: kemampuan menyatakan ulang konsep, memberikan suatu contoh dan non contoh, dan menerapkan konsep dalam pemecahan masalah. Dari hasil penelitian menunjukkan rata-rata nilai siswa adalah 85,43, melebihi 75, dan nilai t-hitung sebesar 4,319 lebih besar dari t-tabel 1,703. Sehingga hipotesis alternatif diterima dan hipotesis nol ditolak. Dengan demikian, model pembelajaran REACT berbasis pendekatan Contextuall Teachiing and Learning (CTL) efektif terhadap kemampuan pemahaman konsep matematis pada materi relasi dan fungsi di kelas VIII SMP Negeri 1 Mamosalato.
Silicon-rich technology combined with calcium for dentin hypersensitivity management in molar incisor hypomineralization
Authors: Valone Gorini Fernanda , Silva Moreira Kelly Maria
Published: December 2024

No abstract
Le Prince philosophe
Authors: de Gouges Olympe
Published: December 2024

Rédigé en 1789 et publié en 1792, Le Prince philosophe transporte dans un orient imaginé pour y poser des questions qui sont alors d’une actualité brûlante. Un roi peut-il être un bon roi ? Les femmes peuvent-elles être les égales des hommes ? Comment combattre les charlatans et les fanatiques ? Comment faire société ? Olympe de Gouges répond en racontant des histoires : rencontres inattendues, intrigues de palais, amours de bergers, problèmes d’héritage et crimes de méchantes reines rythment son roman où l’on découvre aussi une princesse capable de vaincre seule les pirates qui l’ont enlevée.
Texte établi, présenté et annoté par Colombe Brissonnet, Junon Candas, Alix Gaillard, Yeocheva Godey, Sara Haroud, Aurore Michelat, Léa Mollet, Lana Njo Lea, Lucie Pastor, Estelle Villechenoux, Méline Voisin et Olivier Ritz.
Enhancing 21st Century Skills Through Digital Collaborative Assessment Practices in Lesotho Schools
Authors: Thaanyane Mamosa , Jita Thuthukile
Published: December 2024

Collaborative assessment, particularly in digitally connected environments, is becoming crucial in education setting. Studies showed that collaborative assessments are often highly structured learning activities that aim to guide and empower students to refine their skills in reviewing the work of their peers against the set criteria. Even although these practices can be essential in fostering 21st century skills, students are not aware of them as they are still taught and assessed through traditional approaches because teachers tend to avoid integrating collaborative practices in their teaching. Therefore, the aim of this study is to awaken teachers’ collaborative assessment practices and recommend strategies that foster collaborative learning. In doing this, a collaborative learning theory was adapted to underpin the study. The study used a systematic literature review, where the process commenced with problem identification from articles and grey literature. Articles were first screened by their titles to find relevance. A further screening was performed by reading abstracts and irrelevant articles were excluded. Eligibility was another criterion for inclusion and exclusion by reading full-texts and these were included in the final analysis. The study identified that digital collaborative assessment has several benefits to the students: it improves problem-solving; encourages social interaction; promotes diversity; improves communication skills; encourages engagement and develops critical thinking skills. The study also recommends the best practices of carrying out digital collaborative assessments that teachers should follow when designing active group activities; implementing project-based learning; devoting time to team building. When higher education aligns the assessment with curricula objectives, collaborative assessment can effectively impact learning.
Dedications of Shakespeare’s verses
Authors: T Raji. T
Published: December 2024

Shakespeare's verses can be counted as wonderful poems in the English language. It makes us feel that his sonnets are more or less autobiographical but still uncertain. No critics could evaluate these verses 's genuine spirit. So, it remains quite mythical and superstitious. One can even place them in dramatic contexts too. It seems complicated and confusing learners can even say his verses are cryptograms

Keywords: Shakespearean sonnets , fair young man , procreation sonnets , dark lady, mr.W.H, Earl of Southampton, Venus and Adonis, Rape of Lucrece
Workshop Pembuatan Kompos untuk Meningkatkan Kesadaran Pengelolaan Sampah di Lingkungan Sekolah
Authors: Zuriatni Yulisya , Samsurizal Samsurizal , Makkulau Andi , Qori Syrojul , Devi Adelia Kaulika
Published: December 2024

Latar Belakang: Pengelolaan sampah merupakan salah satu tantangan utama dalam menjaga kelestarian lingkungan, terutama di lingkungan sekolah. Workshop pembuatan kompos diselenggarakan sebagai upaya untuk meningkatkan kesadaran dan keterampilan siswa dalam mengelola sampak organik, serta mengintegrasikan materi kimia dalam konteks lingkungan. Tujuan: memberikan pemahaman praktis kepada siswa tentang pemilahan sampah, proses pengomposan, dan manfaat kompos bagi lingkungan. Metode: kegiatan ini dilakukan dalam tiga tahapan, yaitu edukasi mengenai pengelolaan sampah, workshop pembuatan kompos dan evaluasi untuk menilai pemahaman dan keterampilan siswa. Hasil: workshop menunjukkan peningkatan pemahaman siswa tentang jenis-jenis sampah dan cara pengelolaannya. Siswa berhasil membuat kompos dan mampu mendemonstrasikan efektivitas metode yang diajarkan. Kesimpulan: kegiatan ini tidak hanya meningkatkan keterampilan praktis siswa, namun juga mengembangkan kesadaran lingkungan dan tanggung jawab sosial. Workshop pembuatan kompos terbukti efektif sebagai sarana edukasi dan implementasi pengintegrasian materi kimia dalam konteks lingkungan.
CONSUMER’S ACCEPTABILITY OF YOGHURT STABILIZED WITH PUMPKIN (Curcubita pepo L.) STARCH
Authors: ADETUNJI RUTH
Published: December 2024

This research was carried out to determine the possibility of adding pumpkin starch to yoghurt production to improve its physical and sensory properties. Pumpkin yoghurt was made with pumpkin starch at 0% and 1% inclusion, while commercial yoghurt was used as a control and was evaluated by thirty (30) untrained panelists on taste, aroma, consistency, appearance, sourness, and overall acceptability. The results showed significant (p<0.05) differences in the physical parameters of the pumpkin starch yoghurt. The viscosity (3.98), pH (4.90-5.66) and total titratable acidity (0.74%) were observed to be significantly higher in yoghurt with pumpkin starch compared to the control. The syneresis reduced with an increase in pumpkin starch from 3.95-4.70 g/100g on day 0 and increased to 4.80-5.28 g/100g on day 14. There was no significant difference in the consistency of the commercial yoghurt (PYO) and 1% Pumpkin starch yoghurt (PY1) in the overall acceptance score. This study revealed that adding 1% pumpkin starch produces better preference among panelists in appearance, colour, and texture.
Effect of aqueous extract of Mondia whitei fruits on high sucrose-induced oxidative stress in Drosophila melanogaster
Authors: Adewale Olusola
Published: December 2024

Background/Aim: High sugar intake plays an important role in oxidative stress, which has been linked to development of diseases like diabetes. In this study, the effect of aqueous extract of Mondia whitei (AEMW) fruits on high sucrose-induced oxidative stress in Drosophila melanogaster was investigated. Materials and Methods: Adult flies (1 – 3 days old) were exposed to graded doses of AEMW for 12 days to determine the safe dose. Based on this, new flies were grouped into 5 (n = 5; 40 flies per vial). Group 1 served as control and were fed with basal diet, and group 2 with basal diet containing 30% sucrose. Groups 3 and 4, in addition to diet containing 30 % sucrose, were exposed to 0.25 and 0.5 mg AEMW/g diet, respectively, and group 5 flies were exposed to diet containing 0.5 mg AEMW/g diet only. Treatment lasted for 7 days. Biochemical assays such as glucose level, markers of antioxidant and oxidative stress were carried out to assess the effect of high sucrose and/or AEMW on flies. Results: Doses of AEMW up to 0.5 mg/g diet was safe for the flies. High sucrose diet significantly (p < 0.05) increased the level of glucose and oxidative stress markers, and reduced the levels of antioxidant parameters when compared to the control. These changes were prevented by the doses of AEMW. Conclusion: It can be concluded that AEMW possesses anti-hyperglycemic and antioxidant properties, and could be suggested to act against oxidative stress induced by high sucrose in fruit flies.
PREVALENCE AND RISK FACTORS OF HEPATITIS C INFECTION AMONG PREGNANT WOMEN IN ILORIN, KWARA STATE, NIGERIA
Authors: Odebisi-Omokanye Mutiat , Udeze Austine , Sulaiman Mustapha , Abdulhameed A.J , Oladimeji K.M
Published: December 2024

Hepatitis C virus (HCV) poses a significant risk to the well-being of pregnant women and their offspring with about 1.5 million new infections occurring annually. The data on the prevalence and associated risk factors among pregnant women in Nigeria remains limited. This study therefore aimed to determine the prevalence and associated risk factors of hepatitis C infection among pregnant women in Ilorin, Kwara State, Nigeria. This cross-sectional study enrolled 180 eligible pregnant women who visited and received antenatal care at Cottage and Civil Service Hospitals in Ilorin, Nigeria between November 2021 and January 2022. Demographic and clinical data were collected using a structured questionnaire while the antibody screening was via Enzyme-Linked Immunosorbent Assay (ELISA). The data were analyzed with IBM SPSS version 26 at p<0.05 significant level. Of the 180 pregnant women, 8 (4.4%) were positive for HCV. The highest proportion of HCV positivity was recorded among women aged 20-30 years (75%), those with tertiary education (100%), Civil Servants (100%), married women (100%), and those in the second trimester gestational age (100%). Furthermore, 87.5% of HCV-positive patients had a history of blood transfusion and 62.5% reported scarification. However, no significant statistical association was recorded between demographic characteristics, risk factors, and HCV seropositivity (p ˃ 0.05). Although the prevalence of active HCV infection among pregnant women in Ilorin was low, the outcome underscores the importance of routine screening of pregnant women for HCV to prevent maternal and neonatal complications in line with Sustainable Development Goal 3 on good health and wellbeing. This warrants further research for comprehensive data on HCV prevalence among pregnant women across Nigeria.
Economia de Francisco: desafios e possibilidades para uma economia geradora de vida
Authors: Gehm Júlio Verno Fogassa
Published: December 2024

Vislumbrar caminhos a serem construídos para superar as chagas da desigualdade, da violência e da exclusão, elevando uma economia que acolha a todos e gere fraternidade, esta é a proposta do Papa Francisco, inspirando-se no exemplo de São Francisco de Assis. No Brasil esta proposta ganha o nome de “Economia de Francisco e Clara”. A Boa Nova que Jesus de Nazaré apresenta é o caminho para a construção do Reino dos Céus, e Jesus, com seu projeto, evidencia um caminho salvífico de acolhida aos famintos, sedentos, peregrinos, presos, doentes e nus. É ali que Cristo Jesus está presente, e é ali que se efetiva a economia da vida digna para todos, onde cada indivíduo é reconhecido como portador da dignidade divina e parte integrante da família humana. Neste paradigma, a justiça social não é apenas um ideal distante, mas sim uma realidade tangível, construída com base na solidariedade, na compaixão e no amor ao próximo.
O desenvolvimento da educação matemática no processo de gestão escolar
Authors: Guerra Gabrielli de Almeida , Miniguini Silvia
Published: December 2024

O processo de ensino-aprendizagem das matérias de exatas sempre foi um desafio no ambiente escolar. Elas são compreendidas pelas disciplinas que envolvem expressões matemáticas, medições e cálculos para solucionar problemas: matemática, física e química fazem parte dessa área do conhecimento. Essas duas últimas, juntamente a astronomia e biologia, integram o campo da ciência que se dedica ao estudo da natureza e os elementos que a compõem, as Ciências da Natureza, ao analisar as grades de conteúdo das disciplinas ligadas ao cálculo, é notável que suas bases ditem as mesmas regras, então uni-las de forma coerente demonstra um impacto educacional positivo. Serão pesquisadas as formas de contato e interação das disciplinas junto com as que integram suas grades á partir de estudos bibliográficos e de modelos pedagógicos que englobam os de ensino e metodologia e práticas educativas que tiveram êxito em sua amostragem. Trata-se de uma revisão da literatura, através de artigos científicos publicados entre 2012 a 2023, encontradas nos sites Scielo, BDTD (Biblioteca Digital Brasileira de Teses e Dissertações) e Redalyc, utilizando as palavras chaves: Ciências, Natureza, Matemática, Educação, Integração, isolados ou combinados entre si, tendo como parâmetro para pesquisa os desafios pedagógicos que visam proporcionar um aprendizado melhor aos estudantes e através dos fatos foram selecionados os artigos que apresentam a incidência de integração interdisciplinar, a problematização do ensino das ciências da natureza, licenciaturas de ciências naturais e matemática e práticas pedagógicas. Sendo assim as estratégias interdisciplinares unem as disciplinas de Ciências da Natureza e Matemática de uma forma que juntas possam elevar o nível de conhecimento adquirido pelos discentes durante o processo escolar.
Changes in homework submission patterns with the advent of AI tools: a high school perspective
Authors: Boumediene Houda , Bouakkaz Mustapha
Published: December 2024

The unprecedented availability of generative AI tools like ChatGPT has understandably raised some fundamental questions as to what that means for educational practices, let alone homework submission behaviors. This study investigates changes in high school students' homework completion patterns before and after the release of AI tools by analyzing data collected from multiple schools. Through questionnaires and interviews from students and instructors, we will be able to find out the changes in frequency, punctuality, and quality of homework submitted and what proportion of assignments students are completing with AI. Our results show that, although the overall volume of homework submitted remained unchanged, significant changes occurred regarding how students approached their work, such as an increasing reliance on AI instruments for generating ideas, editing content, and solving problems. The study also reveals mixed perceptions on the part of both students and educators when it comes to using AI in a morally appropriate way while performing academic work. These insights are likely to underpin the need for revised education policies and further AI literacy programs that ensure responsible and effective use of AI in learning, and recommendations are provided for educators on how homework practices might be refitted within this evolving technological landscape.
Transformação digital no serviço público: percepções e desafios da integração tecnológica no CEPT Usina de Arte – IEPTEC em Rio Branco/ACRE
Authors: Santos Gercilania Barbosa , Ribeiro Maria Ivanilse Calderon
Published: December 2024

O presente artigo examina a incorporação da tecnologia no ambiente laboral do Centro de Educação Profissional (CEPT) Usina de Artes (IEPTEC) em Rio Branco - Acre. O objetivo é analisar a percepção dos colaboradores sobre a eficiência das tecnologias implementadas, bem como investigar como essas tecnologias afetam a produtividade e a qualidade dos serviços entregues. O estudo busca compreender de que maneira a adoção tecnológica contribui para a eficiência institucional, abrangendo também aspectos como a comunicação interna e a promoção educacional. Adicionalmente, pretende-se identificar os benefícios percebidos e os desafios enfrentados pelos colaboradores nessa nova configuração. Os dados foram coletados por meio de métodos qualitativos e quantitativos, com a aplicação de um questionário de participação voluntária anônima, distribuído aos servidores no período de 19 de junho a 15 de julho de 2024. Aos resultados indicam que determinadas áreas foram positivamente impactadas pela tecnologia: a realização de tarefas foi simplificada, a comunicação foi aprimorada e a acessibilidade da informação melhorou o funcionamento dos departamentos. No entanto, algumas lacunas ainda precisam ser abordadas, como a organização de programas de formação contínua e a disponibilização imediata de suporte técnico quando necessário. Uma implementação tecnológica bem-sucedida depende de vários fatores, incluindo a aceitação do usuário, a utilidade percebida das ferramentas e a adequação do suporte. Essas descobertas agregam conhecimento sobre o impacto da tecnologia no ambiente educacional, fornecendo lições que podem aprimorar futuras estratégias de integração tecnológica no CEPT. A pesquisa é produtiva ao apontar um caminho para o reconhecimento dos efeitos da tecnologia no ambiente acadêmico.
Study of the adsorption of a dye on activated carbon from plant waste
Authors: Chekroud Hassina , Abdelaziz Bouhadiba , Fayçal Djazi , Mohamed Rahim , Amel Lounas , Nabil Bougdah , Salim Heddam , Rachida Zaghdoudi
Published: December 2024

The increasing demand for adsorbents used in environmental protection processes has made their cost increasingly high. To meet this demand, research is focused on the use of low-cost, locally available, biodegradable adsorbents, made from natural sources such as agricultural waste (olive pits, apple peelings, coffee grounds, etc.). This makes it possible to recover these wastes while contributing to environmental protection. The results obtained allowed us, on the one hand, to refine our understanding of the adsorption mechanism of walnut shells and activated carbon, and on the other hand to verify via the comparative study of walnut shells and activated carbon. Our work aimed to apply a process for treating water contaminated with methyl violet dye using adsorbents prepared from walnut shells (biomass, activated biomass, activated carbon and functionalized activated carbon).In this study, many effects were discussed, such as: the effect of the adsorbent, the mass of the activated carbon, the pH, the initial concentration, the functionalized activated carbon.The comparative study of adsorbents shows that the best adsorbent is activated biomass with removal efficiency equal to 77.71%.According to the results obtained, the pseudo second order model was the best, which describes the adsorption modeling, and for the isotherm, it was the Freundlich model.
Study and diagnostic of electrical faults in asynchronous machines
Authors: Azizi Hakim , Sekki Daoud , Kihal Mohammed Charif , Chebout Mohammed , Kihal Marouane , Moulai Hocine
Published: December 2024

Electric drives increasingly use asynchronous motors because of their robustness, their specific power and their cost. Their maintenance and diagnosis therefore become an economic issue.Industrial requirements in terms of maintenance direct research towards a diagnosis using electromagnetic quantities such as flux, current, voltage, and more particularly the stator current which only requires a current sensor which gives an image on the stator phase current, on the other hand this technique makes it possible to improve the reliability of the motor and to increase its service life. It is important to detect early the faults that can appear in these machines and therefore to develop operation monitoring methods has made it possible to analyze the impact of faults on the behavior of the motor. It has made it possible to obtain specific signatures for electrical failures and to predict their evolution. we studied the short-circuit fault in the three-phase asynchronous motor which is the spectral analysis of the stator currents by making a modeling by the finite element method using the FLUX 2D software.
The propagation of power line communications using the S-matrix approach
Authors: Sekki Daoud , Azizi Hakim , Chebout Mohammed , Kihal Mohammed Charif , Kihal Marouane , Zaimen Hicham
Published: December 2024

In this paper, we are interested in the above-mentioned problem by emphasizing the notions of transfer function and especially of power transmitted by HF signals. This work aims at an analysis of the propagation of PLC on power transmission lines and cables as well as on the distribution network. The objective finds its interest in the need for a telecontrol system specific to the power transmission network requiring a greater amount of information to broaden its scope and improve its performance. In this study, we are interested in the propagation of CPL (power line communication), and we deal with modeling HF signals in the electrical network. We present the mathematical elements for representing a tube (multi-wire line or cable) by matrix S. This will then be followed by a presentation on the S-matrix topological approach that we will use to model HF propagation in a multi-wire network (radial or mesh).
Application of aqueous extract of red onion peel for the green synthesis of silver nanoparticles (AgNPs): characterization, assessment of antioxidant and antimicrobial activities
Authors: Lasmi Faouzi , Hamitouche Houria , Laribi-Habchi Hassiba , Boudechicha Amel , Benbekai Rima , Lasmi Anis , Chemat-Djenni Zoubida , Chafai Nadjib
Published: December 2024

Nanotechnology has precipitated a profound upheaval in several scientific domains. The subjects of nanoscience and nanotechnology encompass the synthesis and utilization of nanoparticles with many potential applications. Silver nanoparticles (AgNPs), apart from other nanoparticles; have garnered considerable interest because of their distinctive characteristics. The primary focus of this article was on the green synthesis of AgNPs utilising red onion peel extract. Synthesised green silver nanoparticles (AgNPs) provide several benefits such as energy efficiency, low toxicity, high yields, cost feasibility, environmental compatibility, and easy accessibility. The impact of copper nitrate concentration, temperature, pH, and reaction time of red onion peel extract and silver nitrate (AgNO3) concentrations on the environmentally friendly production of silver nanoparticles (AgNPs) is examined. Characterization of the AgNPs was conducted using UV-Vis spectroscopy, FTIR, XRD, DLS, Zeta Potential, and AFM. Their antimicrobial efficacy was evaluated against gram-negative organisms Escherichia coli (ATCC 25922) and Salmonella enterica (ATCC 13076), as well as positive-gram strains Staphylococcus aureus (ATCC 25923) and Bacillus subtilis (ATCC 6633P). The AgNPs demonstrate enhanced capacity to inhibit DPPH radicals, with an IC50 value in μg/mL. The results indicated that this environmentally friendly approach to synthesizing AgNPs would facilitate the creation of AgNPs with much improved antibacterial and antioxidant characteristics and greatly enhanced therapeutic efficacy.
Addressing under-voltage events in power systems with high renewable energy penetration
Authors: Mohammed Tsebia , Hamid Bentarzi , Azeddine Ratni
Published: December 2024

The increasing integration of renewable energy sources into power systems presents significant challenges for maintaining voltage stability, particularly in cases of under-voltage. Under-voltage events in power systems represents a significant risk to the grid's stability and efficiency. Such events commonly cause device malfunctions, a decrease in operating effectiveness, and, in severe situations, full system failure. This research investigates the fundamental causes of under-voltage scenarios and presents a novel methodology for addressing under-voltage issues by strategically integrating multiple sources of electrical energy. The objective of this technique is to solve instances of under-voltage and avoid the necessity for load shedding. The efficacy of the proposed strategies for maintaining grid stability and addressing under-voltage events is demonstrated through the presentation of case studies and simulations within an environment characterized by the presence of high renewable energy sources. The simulation results show that the strategic integration of renewable energy sources can effectively mitigate under-voltage conditions, enhancing voltage profiles and system stability. The present research demonstrates the potential of utilizing renewable energy source integration as a cost-effective and sustainable solution for under-voltage addressing in power grids with high renewable energy penetration, while also reducing the necessity for conventional voltage support infrastructure.
Dynamic response and vibration signature assessment of SDOF steel system using RISAM shaking table
Authors: Bentifour Abdellatif , Benmansour Nassima , Daci Abderaouf , Derbal Rachid
Published: December 2024

Civil engineering structures face major challenges, particularly earthquakes, which are random phenomena in their intensity and frequency content. The seismic response of structures depends largely on the intensity of an earthquake and especially on its frequency content. Structural Health Monitoring (SHM) is a relevant tool for assessing the dynamic behavior of structures subjected to seismic excitations. This is achieved by using experimental measurements of structural dynamic parameters. The main objective of this study is to identify the vibration signature of a single-degree-of-freedom SDOF steel system. Based on the laws of similarity, a 1:6 reduced-scale model is developed. In this context, dynamic experiments using the shaking table of the RISAM laboratory (Risk Assessment and Management: University of Tlemcen) are carried out to determine the structural dynamic parameters of this steel system. This is achieved through experimental determination of natural frequency and damping of the reduced model. Acceleration and displacement measurements are also established. The experimental estimation of damping is established using the logarithmic decrement method. Several dynamic analyses are carried out based on the finite elements model of the reduced steel system model. The obtained results show that the approach used to determine the dynamic parameters of this reduced model leads to realistic results. On the other hand, a perfect concordance between the numerical and experimental results has been approved.
Existence and uniqueness of solution for a non-local singular boundary value problem
Authors: Mansouri Djamel , Chergui Djamila
Published: December 2024

The main goal of this work is the examination of a mixed singular problem, which is characterized by a singularity of order n at the origin. This problem incorporates a Dirichlet boundary condition alongside an integral with variable bounds. We start by outlining the functional framework for analyzing the posed problem. Initially, we establish a bilateral a priori estimate using energy inequalities. To demonstrate the existence of a solution, we illustrate the density of the image of the operator associated with the problem, relying on regularization operators for our analysis. This approach seeks to demonstrate the existence of a solution to the mixed singular problem, ensuring that the solution adheres to the Dirichlet boundary conditions and the integral with variable bounds. Central to this process are the regularization operators and energy inequalities, which help manage the singularities and establish the existence of a well-defined solution.
Minimal translation factorable surfaces in hyperbolic space
Authors: Ahmed Difi Sid , Hanifi Zoubir , Rafik Medjati
Published: December 2024

The theory of Minimal Surfaces is  one of the most interesting subject in mathematics. The study and computation of minimal surfaces has a long history. Lagrange made the ﬁrst investigation of the minimal surfaces by asking a simple question named as Plateau’s problem which concerns with ﬁnding a surface of least area that spans a given ﬁxed one-dimensional contour in three-dimensional Euclidean space. The study of this kind of surfaces has motivated the development of numerous concepts and techniques in the calculus of variations which later have been applied to solving a great quantity of problems in very diverse areas ranging from the study of partial differential equations to topology and even to settling conjectures in relativity. Mathematically, a minimal surface corresponds to the solution of a nonlinear partial differential equation. In this paper, we define two types of Translation-Factorable (T-F) surfaces in the 3-dimensional hyperbolic space. Then, we obtain the complete classification of these surfaces with vanishing mean curvature by solving some differential equations.
Decision support for evaluating performance and prioritizing rehabilitation of the water distribution network: a case study of Chelghoum-Laid, Mila City, Algeria
Authors: Abderzak Moussouni , Aziz Maaliou , Amer Zeghmar , Dalila Ziani , Leila Benchaiba , Leila Djekoune
Published: December 2024

This research article explores the use of the Analytic Hierarchy Process (AHP) as a decision support tool for evaluating and rehabilitating the water distribution network in Mila City, Algeria. The study identifies key challenges, such as water loss, infrastructure deterioration, and inadequate service delivery. By employing AHP, the researchers systematically prioritize various performance indicators, including water quality, pressure, and operational efficiency. Data is gathered from field assessments and stakeholder interviews to develop a hierarchical model that reflects the network's critical factors. The findings demonstrate that AHP facilitates informed decision-making by allowing stakeholders to weigh different rehabilitation options effectively. The results indicate that targeted investments can significantly improve the system’s performance. The AHP method has revealed that the performance of the "network condition" criterion is around 36%, and the performance of the "customer complaint handling" criterion is 0.49, indicating that the network is in poor condition. On the other hand, the performance of the "physical-chemical quality of the distributed water" is approximately 80%. Overall, the performance of the distribution network is average at about 50%, suggesting the need for renovation to improve its efficiency and functionality. The study emphasizes the importance of integrating AHP into water management practices, suggesting that it can enhance the sustainability and reliability of water services in Mila City. The conclusions provide actionable recommendations for local authorities and utility managers to guide future rehabilitation efforts, contributing to improved water resource management in Algeria.
Proportional resonant controller design with anti-windup for a single-phase solar inverter
Authors: Khaled Ameur , Aboubakeur Hadjaissa , Mohammed Benmiloud , Nabil Abouchabana , Atallah Benalia , Tina Giuseppe Marco
Published: December 2024

This paper introduces a novel control strategy for regulating the output voltage of a single-phase inverter equipped with an LC filter. The proposed method integrates a Proportional Resonant (PR) controller with an anti-windup compensator to address challenges in voltage regulation and system stability. Unlike conventional techniques, this control approach relies on a single measurement from an output voltage sensor, eliminating the need for complex frame transformations and significantly simplifying the control architecture. The innovative use of the PR controller ensures high performance by achieving zero steady-state error for sinusoidal references, making it particularly effective for applications requiring precision and reliability. The anti-windup compensator enhances system robustness by mitigating controller saturation and maintaining stability under varying load conditions. Extensive experimental tests were conducted to validate the proposed method, demonstrating its superior effectiveness and robustness compared to traditional control strategies. Results highlight its ability to achieve fast response times, minimal steady-state error, and consistent performance across a wide range of operating conditions. This control design offers a simplified yet efficient solution for inverter applications, paving the way for improved performance in renewable energy systems, power distribution networks, and industrial automation, where precise voltage regulation is critical.
On the limit cycles of a new class of liénard differential system
Authors: Melki Houdeifa
Published: December 2024

The study of linear center perturbations for the existence of limit cycles using Averaging Theory is an essential topic in dynamical systems. The theory of averaging provides a powerful method to analyze nonlinear oscillations and determine the emergence of limit cycles in perturbed systems. In particular, this research investigates how small perturbations of linear centers can lead to the creation of limit cycles, which are closed trajectories representing periodic solutions. By applying the Averaging Theory, one can derive conditions under which limit cycles appear. This approach is valuable for understanding the complex dynamics of perturbed systems and has significant implications in various fields, including physics, biology, and engineering. In this work we apply the averaging theory of to a planar differential system, witch can bifurcate from the periodic orbits of the linear center ,  for study the maximum number of limit cycles of these system.