bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aktivitas Antioksidan Ekstrak Etanol Daun dan Batang Etlingera comosa Endemik Sulawesi Tengah Menggunakan Metode ABTS
Authors: Anugraini Annisa Putri , Rasida  , Maskur Risda , Satriani  , Razak Abd Rahman , Yuyun Yonelian 
Published: December 2024

Etlingera comosa adalah jenis tanaman yang unik dan baru ditemukan, berasal dari Tentena, Sulawesi Tengah. Meskipun diyakini bahwa genus Etlingera ini mengandung senyawa antioksidan, belum ada penelitian yang mendalam mengenai spesies Etlingera comosa. Oleh karena itu, penelitian ini bertujuan untuk mengidentifikasi kandungan senyawa metabolit sekunder pada ekstrak etanol daun dan batang tanaman Etlingera comosa, serta mengidentifikasi aktivitas antioksidan yang terdapat pada ekstrak etanol daun dan batang Etlingera comosa. Penelitian ini menggunakan metode ABTS (2,2-azinobis 3-etilbenzotiazolin-6-sulfonat) untuk menentukan aktivitas antioksidan ekstrak etanol daun dan batang Etlingera comosa. Hasil dari penelitian menunjukkan bahwa ekstrak etanol tanaman Etlingera comosa pada bagian daun positif mengandung senyawa metabolit sekunder golongan flavonoid, alkaloid, steroid dan tanin. Sedangkan bagian batang positif mengandung senyawa metabolit sekunder golongan flavonoid, alkaloid, dan tanin. Aktivitas antioksidan ekstrak etanol tanaman Etlingera comosa berdasarkan nilai IC50 bagian daun sebesar 11,75 μg/ml sedangkan bagian batang sebesar 83,11 μg/ml. Penelitian ini menunjukkan bahwa ekstrak etanol daun dan batang Etlingera comosa mempunyai senyawa antioksidan serta memiliki aktivitas antioksidan.

Etlingera comosa is a unique and newly discovered plant species endemic to Tentena, Central Sulawesi. Although the Etlingera genus is believed to contain antioxidant compounds, there has been no thorough research on the specific species Etlingera comosa. This study aims to investigate thephytochemical content of the ethanol extract from the leaves and stems of Etlingera comosa, as well as to evaluate its antioxidant activity. The research utilized the ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate)) method with UV-Vis spectroscopy, measuring at a wavelength of 751 nm to assess the antioxidant activity of the ethanol extract. The findings indicated that the ethanol extract from the leaves of Etlingera comosa tested positive for secondary metabolite compounds, including flavonoids, alkaloids, triterpenoids/steroids, and tannins. In contrast, the stems showed positive results for flavonoids, alkaloids, and tannins. The antioxidant activity was quantified using the IC50 value, 11.75 μg/ml for the leaf extract and 83.11 μg/ml for the stem extract. These results demonstrate that the ethanol extracts of both the leaves and stems of Etlingera comosa contain antioxidant compounds and exhibit antioxidant activity.

Submitted: 09-09-2024, Revised: 26-11-2024, Accepted: 29-11-2024, Published regularly: December 2024
Formulasi dan Penentuan Nilai SPF Krim Tabir Surya Ekstrak Etanol 96% Daun Beluntas (Pluchea indica (L). Less) secara In Vitro
Authors: Marasita Tarisa Sandya Ayu , Suproborini Arum , Kusumawati Desi 
Published: December 2024

Pemanfaatan tanaman yang mengandung antioksidan sebagai salah satu produk kecantikan kini mulai berkembang karena adanya tren back to nature. Metode penelitian yang digunakan adalah True Experimental Design dengan jenis penelitian posttest only control design berdasarkan perbandingan antara kedua kelompok, yaitu kelompok kontrol dan eksperimen. Penelitian ini bertujuan untuk mengembangkan formula sediaan krim tabir surya ekstrak etanol daun beluntas sebagai bahan aktif dengan konsentrasi berbeda yaitu 5%, 10%, dan 15%. Berdasarkan penelitian diperoleh hasil Formula 1 memiliki kararakteristik yang memenuhi standar dibanding F0, F2, dan F3. Berdasarkan penentuan nilai Sun Protection Factor (SPF) diperoleh kategori maksimal pada Formula 3 dengan nilai SPF 9,396.

The use of plants that contain antioxidants as a beauty product is now starting to increase because of the “back to nature” trend. The research method used was True Experimental Design with a posttest only control design type of research by making a comparison between the two groups, namely the control and experimental groups. The aims was to develop a sunscreen cream preparation formula of ethanol extract of beluntas leaves as an active ingredient with different concentrations, namely 5%, 10% and 15%. Based on the research, the results show that Formula 1 has characteristics that meet the standards compared to F0, F2 and F3. Based on the test for determining the Sun Protection Factor (SPF) value, the maximum category was obtained in Formula 3 with the SPF value of 9.396.

Submitted: 18-09-2024, Revised: 06-12-2024, Accepted: 11-12-2024, Published regularly: December 2024
DEVELOPING WEB-BASED LEARNING MEDIA TO FOSTER LITERACY IN HIGHER EDUCATION
Authors: Inharjanto Anselmus , Lisnani Lisnani 
Published: December 2024

The research aims to develop web-based learning media to foster literacy in higher education that is valid, practical, and potentially effective. Besides, this study attempts to obtain the average literacy score using the developed web-based learning media. The researchers employed the ADDIE model of instructional design comprising five phases: analysis, design, development, implementation, and evaluation. The research subjects were university students of Musi Charitas Catholic University, particularly the English Language Education Study Program students. The data collecting technique employed tests, questionnaires, and documentation. The collected data was analyzed by using qualitative descriptive analysis and thematic analysis. The research results show that web-based learning media on literacy using Google Sites is categorized as valid and practical and has potential effects. The result shows that the average literacy score is 84.8. Thus, web-based learning is likely to foster literacy in the context of higher education.
Evaluating the Flexural Properties of Polyoxymethylene Under Aggressive Environmental Conditions
Authors: Adrian-Marius Pascu , Olivia-Laura Petraşcu 
Published: December 2024

Abstract
This study evaluates the four-point flexural behavior of polyoxymethylene (POM) specimens exposed to different environmental conditions. Ten specimens were tested, for each of which five different mediums were studied: ambient environment, distilled water, cooling oil, UV-C radiation, and saline solution. The main objective was to find the influence of these environments on maximum bending stress and compare the values obtained for all four aggressive mediums to the value for the ambient environment. The results showed that exposure to the three liquid media-distilled water, cooling oil, and salt solution-leads to a reduction in bending stress, underscoring the potential weakening effects of these media. In contrast, samples exposed to UV-C showed an increase in bending stress, suggesting an increase in material stiffness under these conditions. This study provides guidelines for the optimal use of POM in various applications and provides clear information on its mechanical performance in various industrial and environmental environments.
The Utilization of Management Tools for Quality Improvement in Industrial Sectors
Authors: Valentin Grecu , Călin Deneş 
Published: December 2024

Abstract
This study investigates the adoption and effectiveness of quality management tools in industrial sectors, highlighting their impact on organizational performance. Using a mixed-methods approach, data were collected through structured questionnaires targeting professionals across various industries. Results show that traditional tools like the Pareto Chart and Ishikawa Diagram are widely adopted and highly effective, while advanced tools such as Statistical Process Control (SPC) face implementation challenges due to technical and organizational barriers. The findings underscore the importance of training, organizational readiness, and the integration of digital technologies to enhance tool utilization. This research contributes to the literature by providing actionable insights for improving quality management practices in diverse industrial contexts.
A case of assisted reproductive technology–induced maternal alloimmunization: an emerging sensitizing factor to consider?
Authors: Sachan Deepti , Thiyagarajan Varnisha , G Deepthi Krishna 
Published: December 2024

Abstract
Red blood cell (RBC) alloimmunization can occur because of exposure to various sensitizing factors and poses a constant threat in transfusion. Assisted reproductive technology (ART) involves manipulation of sperm, ova, or embryos in vitro with the goal of producing a pregnancy. We present an interesting case of ART-induced maternal alloimmunization (AIMA) due to anti-c in a woman carrying a twin pregnancy. A 35-year-old primigravida, whose blood sample typed as group B, D+ and showed anti-c in her plasma, delivered twins by cesarean section. The spouse’s blood group was also B, D+. The blood groups of twins I and II were confirmed to be B, D+ and AB, D+, respectively. The RBCs of twin I were c+, but those of twin II and the spouse were c−. On enquiry, history of ART with donor sperm insemination was noted. Because there were no previous sensitizations, antigenic inheritance from the sperm donor to twin I could be the possible sensitizing factor for maternal alloimmunization. To the best of our knowledge, this case is the first report of ART-induced maternal RBC alloimmunization in the literature. History of ART exposures should be documented, and appropriate RBC phenotyping of the parent as well as potential ART donors will help in timely detection or prevention of hemolytic disease of the fetus and newborn or other AIMA-related complications.
Monitoring Deformations in the E36 Mining Pillar at Salina OCNA DEJ Using UAV Equipment
Authors: Balasz Csaba , Glonţ Cristiana , Ștefan Nelu , Tacu Liviu 
Published: December 2024

Abstract
Monitoring deformations in mining pillars in salt mines is crucial for detecting spalling, cracks, and distortions caused by internal pressures, with the aim of preventing mining accidents and maintaining structural integrity. At Salina Ocna Dej, annual measurements have not utilized drone technology, which was recently introduced in Romania. The measurements conducted with the DJI Phantom 4 Pro Plus drone in 2020 and 2024 provided essential data on changes in the mining pillar. In 2020, difficulties caused by air currents slightly affected the measurements, but by 2024, improved conditions allowed for more accurate results. The horizontal sections taken at various elevations revealed significant spalling and distortions, particularly on the eastern and western sides, with substantial rupture in the northwest corner and displacements on the northern side. Comparing the data from the two measurement sets showed a significant difference in precision, highlighting the need for regular inspections to prevent premature erosion and avoid accidents.
Green preparation of argentum tungstate and characterization as nanorod with catalytic evaluation for synthesizing tetracyclic xanthenes and validation as anti-TB
Authors: Almehizia Abdulrahman A. , Al-Omar Mohamed A. , Naglah Ahmed M. , Ghabbour Hazem A. , Hassan Ashraf S. , Khatab Tamer K. 
Published: December 2024

Abstract
The work presented a facile, one-step procedure as a green assembly process for preparing silver tungstate nanorod by hydrothermal technique via a chemical reaction between silver nitrate and sodium tungstate. The synthesized precipitate was characterized using X-ray diffraction (XRD) transmission electronic microscope (TEM) and scanning electron microscopy (SEM) to ensure the formation of crystallization and single-phase material. The prepared nanorods undergo a catalytic evaluation to synthesize tetrahydrobenzo[a] xanthene-11-one derivatives by a one-pot reaction of β-naphthol, dimedone, and aromatic aldehyde with a catalytic amount of silver tungstate under the solvent-free condition at 60–70 °C. ArgC is one of the L-arginine biosynthetic pathways of mycobacterium tuberculosis. The molecular docking explains that all the synthesized compounds presented high ligand ability for the targeted enzyme compared with xanthene-9-carboxylic acid as a reference.
Effect of metal addition of Cu, Ni, and Fe on swelling Zeolit Alam Lampung (ZAL) to present amphoteric features on Cu-Ni-Fe/ZAL swelling
Authors: Susmanto Prahady , Intang Ambo , Bustan Muhammad Djoni , Haryati Sri 
Published: December 2024

Abstract
The main challenge in using Zeolit Alam Lampung (ZAL) as a catalyst lies in controlling its acidic nature which is influenced by the content of alkali metals, alkaline earth metals, transition metals, and Si/Al ratio. Controlling by reducing and adding metals with higher acidity is necessary. This research involved two stages: ZAL Swelling formation followed by adding Cu, Ni, and Fe metals to make a Cu-Ni-Fe/ZAL Swelling catalyst. The acid distribution analysis using the NH3-TPD profile test showed that the Cu-Ni-Fe/ZAL swelling catalyst exhibited higher Lewis-type acidity and more uniform distribution compared to Brønsted acid. The addition of Cu, Ni, and Fe metals can modify the acidity strength of ZAL Swelling to form Cu-Ni-Fe/ZAL Swelling catalysts with Lewis and Brønsted sites at lower temperatures (120–550 °C) compared to ZAL Swelling (120–750 °C). This gives an idea about the optimization of the arrangement of Lewis and Bronsted acid sites to present amphoteric features.
Impact of Structure Parameters on the Critical Performance of a Novel Calciner—A DEM-Based Study
Authors: Zhou Tiezhuang , Zhang Fagen , Xu Run , Gao Yan , Xie Genghua , Xiao Kai , Yang Bin , Jiang Wenchun 
Published: December 2024

Abstract
Fracture in a revolving tube due to creep deformation and thermal-mechanical fatigue is a growing concern in industrial equipment research and production, especially after long-term exposure to corrosion and high-temperature conditions in roasting furnaces. The calcination temperature and residence time are crucial in the catalyst production process, with optimal conditions en-hancing catalyst activity and stability. To improve the longevity of roasting furnaces, optimizing the construction structure of the calciner is critical. This study develops a novel calciner structure and mathematical models to understand the effect of structural parameters on critical performance. Computer simulations, predictive modelling, and rotational velocity analysis of the novel calciner were performed using a DEM. The effects of the baffle angle and overlap ratio on the flow pattern and MRT were studied through simulations and experiments. The main conclusions are as follows: (1) The operating parameter with the greatest effect on the MRT was the rotational angular velocity, followed by the baffle angle and overlap ratio. (2) The MRT calculation based on the numerical method model showed an error of no more than 10.0% compared to the actual measurement data, confirming the model’s accuracy. Our study provides a theoretical foundation for a deeper understanding of the complex MRT and flow field processes within this novel calciner. It also aids in optimizing the working parameters, performance, and structure of pilot equipment while offering fundamental data for future industrial applications.
Ball milling preparation of spent graphite supported zero-valent iron-copper to degrade tetracycline in water
Authors: Hang Xingping , Wu Xiaotian , Song Wei , Chen Shuai 
Published: December 2024

Abstract
In this study, graphite and copper from spent LIBs were used to prepare graphite supported zero-valent iron-copper (ZVI-Cu/G) by ball milling, to improve the reactivity of ZVI. The structure, composition, morphology, and properties of ZVI-Cu/G were fully analyzed. The removal performances of tetracycline by ZVI-Cu/G were tested under different reaction conditions. Graphite and copper improve the dispersion, specific surface area and reactivity of the material. Operational factors, material dosage of 1 g/L, initial pH of 3, temperature of 25 °C, and H2O2 concentration of 2 mM, contribute to the best tetracycline removal rate, being 100% in 30 min for 30 mg/L tetracycline solution. The reaction data fits a pseudo first-order model. Tetracycline removal rate was as high as 90% even in the 3rd round of reuse. This study reports a novel ZVI material with high tetracycline removal rate.
Factors Affecting the Phase Inversion Process of Alkyl polyglycol ether C16-18/Fatty Alcohol/Oil/Water System
Authors: Zhang Wanping , Cui Dingyuan , Zhang Qianjie , Zhang Dongmei , Zhu Guangyong 
Published: December 2024

Abstract
The change of spontaneous curvature of nonionic surfactants is related to temperature. The phase inversion of the emulsion system is induced by temperature change, which is called phase inversion temperature method. Experiments were carried out in which Ceteareth-12 (Alkyl polyglycol ether C16-18) and Ceteareth-20 (Alkyl polyglycol ether C16-18) were used as hydrophilic emulsifiers and fatty alcohol as lipophilic emulsifiers. It was found that the increase of HLB value of hydrophilic emulsifier, the decrease of fatty alcohol content or the increase of carbon atom number of fatty alcohol led to the increase of phase inversion temperature of the system. The experimental results also showed that when the hydrophilicity of emulsifier system was enhanced, the second phase inversion would be more obvious. The phase inversion temperature of ester oils is generally higher than that of alkane oils.
Ultrasound assisted by microwave during the extraction of avocado oil: quality assessment by chromatographic techniques, Raman spectroscopy, and thermogravimetric analysis
Authors: Topete-Betancourt Alfonso , Martínez-Flores Héctor E. , Jiménez-Sandoval Sergio J. , de Dios Figueroa-Cárdenas Juan , Virgen-Ortiz José Juan , Valencia Jaime Espino , Garnica-Romo Ma. Guadalupe , Gómez-Ayala Miguel A. 
Published: December 2024

Abstract
The aim of this study was to characterize the bioactive components in avocado oil (AVO) extracted by ultrasound combined with microwave, which are clean technologies used to assess oil quality. AVO samples were incubated for 30 min at 120 °C (T1), 180 °C (T2), and without any heat treatment (T3). Components were identified using chromatographic techniques, Raman spectroscopy, and thermogravimetric analysis (TGA). γ-Tocopherol and total carotenoids were affected in T2. The Raman spectrum of T3 and T1 presented a strong band at 1265 cm–1 related to the high content of linoleic acid and three bands associated with carotenoids. In the T2 sample, a weak intensity of the linolenic and linoleic acids was observed. In TGA, T2 showed a robust mass at 173.89 °C, characteristic of oxidized oil compounds. AVO treated at 120 °C for 30 min maintained the integrity of the bioactive compounds.
Integrating Reflective Practice into the Self-Improvement Cycle Module for Renewable Energy Forecasting Accuracy
Authors: Veigners Girts , Galins Ainars , Dukulis Ilmars , Veignere Elizabete 
Published: December 2024

Abstract
The increasing reliance on renewable energy sources such as solar and wind power necessitates the development of advanced forecasting techniques to address the inherent variability and unpredictability of these energy systems. Accurate forecasting is vital for optimising energy production, maintaining grid stability, and effectively integrating renewable energy into power systems. Traditional forecasting methods often struggle to adapt to rapidly changing environmental conditions and new data inputs, limiting their effectiveness in dynamic contexts. This study introduces the Self-Improvement Cycle (SIC) module, which is designed to enhance forecasting accuracy through continuous learning, adaptation, and feedback integration. The SIC module leverages advanced machine learning algorithms, reinforcement learning techniques, and reflective practice principles to create a self-improving framework that dynamically updates models based on real-time data and external feedback. The module’s design incorporates multiple feedback loops, enabling the system to iteratively refine its performance and remain robust in the face of changing conditions. Reflective practice, a concept drawn from psychology, plays a critical role in the SIC module by facilitating ongoing evaluation and adaptation. By learning from previous predictions and continuously adjusting algorithms, the SIC module demonstrates its potential to improve forecasting accuracy across various domains, with a particular emphasis on renewable energy forecasting. The theoretical and mathematical foundations of the SIC module are explored, showcasing its capability to enhance predictive accuracy and resilience in an evolving energy landscape.
Cultural Ties of the Croatian and Slovene Population in the Wider Area of Čabar: A Historical Overview in Contemporary Perspective
Authors: Josipovič Damir , Kaselj Marina Perić , Šimunić Nikola , Škiljan Filip 
Published: December 2024

Abstract
The paper discusses the impact of recent socio-economic and geopolitical changes on cultural ties and ethnic identity formation in the wider area of Čabar, Croatia. It emphasises the importance of understanding the historical context of cross-border relations in this geographically peripheral border region. To assess the specific position of relative isolation, a robust interdis- ciplinary methodological approach was used, combining the analysis of historical documents, registry books, and population censuses with qualitative methodology like in-depth semistructured interviews with local residents. To assess the specific local interrelations, the patterns of population migration and cross-border marriages (presented in the appendix) were reconstructed and exa-mined. Changes that occurred after the dissolution of Yugoslavia and the establishment of new independent states shed new light on how the local populace reproduced their identity.