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International Journal of Science, Technology and Applications
Published by Alpatih Harapan Semesta
ISSN : -     EISSN : 30249228     DOI : https://doi.org/10.70115
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Engineering Physics
International Journal of Science, Technology and Applications [e-ISSN: 3024-9228] is an Open Access Journal published by the Alpatih Harapan Semesta Foundation. IJSTA is intended to communicate original research and current issues about science (Physics, Biology, Chemistry), technology and its applications. This journal publishes research articles that are comprehensive by inviting reviews from leading experts in their fields. Incoming papers will be peer-reviewed and selected based on high scientific study and ability to make important contributions in the field. International Journal of Science, Technology and Applications. Published by the Alpatih Harapan Semesta Foundation, which is twice a year in June and December
Arjuna Subject : Umum - Umum
Articles 29 Documents
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Implementation of Microcontroller-Based Automatic Waste Bins To Support Work Efficiency In One of The Msmes Purnama, Alfhat Diya; Sulthoni, Adriyan
International Journal of Science, Technology and Applications Vol 3 No 1 (2025): Volume 3 Number 1 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i1.208

Abstract

Efficient waste management is a challenge for many SMEs, including iced tea businesses, in maintaining cleanliness and operational comfort. This research aims to design and implement a microcontroller-based automatic trash bin system as an innovative solution for waste management. The researchers focus on utilizing Arduino microcontroller technology with ultrasonic sensors to detect objects automatically. This study addresses the fundamental question of how an automated system can enhance waste management efficiency through prototype design and testing. The system successfully opens and closes the trash bin lid automatically with a fast response time, minimizing direct user interaction with the bin. Findings indicate that this system improves cleanliness, reduces the risk of germ transmission, and has potential for further development, such as adding waste capacity sensors and mobile application integration. Thus, this system offers an efficient and cost-effective solution for waste management at the SME scale.
Alternative Antibacterial Agents from Endophytic Bacteria of Curry Leaves (Murraya koenigii L. Spreng) for Inhibiting Diarrhea-Causing Bacteria Harahap, Diannita; Firda, Rauzatul
International Journal of Science, Technology and Applications Vol 3 No 1 (2025): Volume 3 Number 1 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i1.269

Abstract

This study focused on the isolation and characterization of endophytic bacteria from curry leaves (Murraya koenigii L. Spreng), a medicinal plant known for its health-promoting properties. The research aimed to identify bacterial isolates based on their colony morphology, biochemical characteristics, Gram and endospore staining, and to assess their antibacterial activity against Bacillus cereus ATCC 11788 and Shigella sonnei. Leaf segments (1 cm) were surface-sterilized using 2% sodium hypochlorite three times and cultured on Nutrient Agar supplemented with 0.01% nystatin, followed by incubation at 37°C for 24 hours. A total of nine bacterial isolates were obtained, all showing Gram-positive reactions and positive endospore formation, indicating their classification within the Bacillus genus. The antibacterial activity was tested using the Kirby-Bauer disk diffusion method, revealing that the endophytic isolates exhibited weak inhibitory effects against both tested bacterial strains. These findings suggest that while Bacillus endophytes from M. koenigii possess limited antibacterial potential under the tested conditions, they still hold promise for further investigation as potential sources of bioactive compounds with therapeutic applications.
Description of Tinea Unguium Infection Levels in Farmers' Nails in Meunasah Pupu Village, Ulim District, Pidie Jaya Regency Lubis, Syafrina Sari; Nacia, A’Arifa
International Journal of Science, Technology and Applications Vol 3 No 1 (2025): Volume 3 Number 1 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i1.270

Abstract

Tinea unguium infection is a fungal infection that attacks the nails characterized by cracks and the color of the nails changing to reddish brown, and yellowish. Tinea unguium occurs with a general condition that begins with spots or yellow on the toenails. Severe fungal infections can cause nails to blacken, thicken, and crumble at the edges. This infection can affect several nails but usually not all nails are infected. If the fungal infection on the nails is still relatively mild, it does not require treatment. Fungal nail infections can cause pain and thickening of the nails so that they require care and treatment. This study aims to identify the type of fungus that causes Tinea unguium in the nails of farmers in Meunasah Pupu Village, Ulim District, Pidie Jaya Regency. The method of taking samples of farmers' nails was carried out descriptively by conducting direct interviews. The sample involved 20 respondents who had nail damage. Nail scraping samples were grown on PDA media and incubated for 3-7 days at a temperature of 25 ⁰C. Based on the characterization, 23 isolates were obtained, namely Trycophyton rubrum (SB1), Trycophyton mentagrophyts (SC1), Epidermophyton floccosum (SG1, SH1, ST1), and Aspergillus sp.
Standardization of Simplisia of Dutch Teak Leaves (Guazuma ulmifolia) and Root of Mud (Rheum officinale) To'bungan, Nelsiani
International Journal of Science, Technology and Applications Vol 3 No 1 (2025): Volume 3 Number 1 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i1.272

Abstract

Standardization of simplicia is one of the important stages in ensuring the quality of herbal simplia. This study aims to conduct specific and non-specific standardization of simplicia of Dutch teak leaves (Guazuma ulmifolia) and kelembak root (Rheum officinale) based on the parameters of the Indonesian Herbal Pharmacopoeia (FHI) 2017. The parameters tested included moisture content, total ash content, insoluble ash content, drying shrinkage rate, ethanol soluble juice content, and water soluble juice content. The results showed that the simplicia of Dutch teak leaves had a moisture content of 7.90 ± 0.27%, a total ash content of 8.53 ± 0.19%, an acidic insoluble ash content of 1.95 ± 0.52%, drying shrinkage of 4.36 ± 0.28%, the content of ethanol soluble juice 26.20 ± 0.79%, and water-soluble juice 16.29 ± 0.44%. Meanwhile, the root of the pond showed a moisture content of 3.93 ± 0.25%, a total ash content of 5.76 ± 0.90%, an acidic insoluble ash content of 0%, drying shrinkage of 3.23 ± 0.09%, the content of ethanol soluble juice 88.6 ± 1.03%, and water-soluble juice 3.11 ± 0.51%. All non-specific parameters meet the requirements of FHI. The high value of ethanol-soluble juice in the root of the lembak indicates the richness of semipolar compounds, while Dutch teak leaves excel in the content of polar compounds. These results suggest that both simplicia are suitable for use as raw materials for phytopharmaceuticals, either singly or in combination, particularly in the development of herbal products for metabolic disorders
Identification of Arthropod Diversity in The Cemara Beach Mangrove Ecosystem Yulianti, Yulianti; Sazali, Munawir
International Journal of Science, Technology and Applications Vol 3 No 1 (2025): Volume 3 Number 1 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i1.322

Abstract

Mangrove ecosystems play an important role in maintaining the balance of the coastal environment and become a habitat for various types of fauna, including arthropods. This study aims to identify the types of arthropods and determine the level of diversity in the mangrove ecosystem of Cemara Beach, West Lombok Regency. The method used is an exploratory survey method with sampling techniques using Hand Collecting and Sweep Netting in several mangrove vegetation zones.  The presence of these arthropods suggests that the mangrove ecosystem in Cemara Beach still supports the life of various small organisms, although some environmental changes, such as deforestation and increased garbage are beginning to affect the presence of some species. Therefore, the results of this study can be the initial basis for sustainable mangrove conservation and management efforts, while affirming the importance of the role of arthropods in maintaining the balance of coastal ecosystems.
The Influence of the Problem-Based Learning Model on Students' Comprehension of the Concept of Pressure in Solids in Grade IX Octaviany, Jeanny; Kariadiinata, Rahayu; Chusni, Muhammad Minan
International Journal of Science, Technology and Applications Vol 3 No 1 (2025): Volume 3 Number 1 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i1.376

Abstract

The learning model used in learning science concepts should have a strong influence or impact on students'  understanding of a science concept. Researchers in this case conducted research related to the Influence of  the Problem Based Learning Learning Model carried out at SMPN 2 Solokanjeruk with samples of class  IX-I on the concept of Pressure on Solids .Researchers conducted a pretest test before conducting learning  with the Problem Based Learning learning model, and conducted a posttest test after conducting learning  using the Problem Based Learning Learning Model. After conducting inferential statistical analysis (2  related samples), Researchers found that Science Learning with the Problem Based Learning Learning  model had a strong impact on student learning outcomes. The results of the N-Gain data analysis had an  average score of 59.9817 or 0.599817, namely, the increase in students' science understanding was in the  moderate category, with an N-Gain percentage of 59.9817% having a fairly effective category. The results  of this research study identified an increase in high science understanding of 41%, an increase in medium  science understanding of 49%, an increase in low science understanding of 5%, no increase in  understanding of 2.5%, and a decrease in understanding of 2.5%. Based on this, the Problem based learning  model on the concept of Pressure on Solids for class IX-I students of SMPN 2 Solokanjeruk has a fairly  good impact on students' science understanding.
The Effectiveness of Inquiry-Based Learning with a Deep Learning Approach on Critical Thinking Skills of 8th Grade Junior High School Students Salam, Habibi; Kariadinata, Rahayu; Chusni, Muhammad Minan
International Journal of Science, Technology and Applications Vol 3 No 2 (2025): Volume 3 Number 2 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i2.378

Abstract

This research endeavors to evaluate the efficacy of implementing the Inquiry-Based Learning (IBL) model, augmented by a Deep Learning methodology, for the enhancement of critical thinking abilities and academic achievements in eighth-grade students at SMP Plus Al-Ittihad Cianjur, specifically concerning the human circulatory system. A quasi-experimental methodology, utilizing a one-group pretest-posttest framework, was adopted for this investigation. A cohort of 30 students was chosen via purposive sampling to constitute the study's sample. Data acquisition was performed utilizing pretest and posttest instruments, followed by analysis through descriptive statistical methods, the Shapiro–Wilk normality test, the Wilcoxon Signed Rank Test, and N-Gain analysis. The findings revealed a significant difference between pretest and posttest scores (Sig. 0.000 < 0.05). However, the average N-Gain score was 0.1311 or 13.11%, categorized as low and less effective. This indicates that although the IBL model with a Deep Learning approach has the potential to enhance critical thinking skills, its implementation has not yet been optimal. Contributing factors include students’ low readiness for active learning and teachers’ limited ability to facilitate reflective processes. Therefore, further teacher training and student engagement strategies are needed to maximize the effectiveness of this integrated approach in improving science learning quality in secondary education.
Physical Analysis In Making Rowe Pakoda: A Case Study Of Sumba Local Food Wisdom Anggraeni, Desak Made; Jewaru, Aurelia Astrid L.
International Journal of Science, Technology and Applications Vol 3 No 2 (2025): Volume 3 Number 2 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/ijsta.v3i2.400

Abstract

This study aims to analyze the underlying physical principles of Rowe pakoda, a traditional snack from Sumba, using a case study approach grounded in local wisdom. A qualitative method was employed in this research, with data collected through participatory observation and in-depth interviews. The results indicate that the final quality of the product is significantly determined by the application of applied physics. The boiling process involves thermodynamic mechanisms, in which convective heat transfer and thermal hydration are the key drivers of starch gelatinization, resulting in a smooth texture and cohesion among the raw material components. Furthermore, fluid mechanics plays a role in analyzing the rheology of non-Newtonian dough, which regulates water absorption kinetics and product consistency stability. The findings validate that traditional Sumba cooking techniques are an intuitive and effective application of physical laws, providing a scientific contribution to the optimization of Indonesian archipelago cuisine. The novelty of this research lies in its systematic deconstruction of intuitive indigenous techniques into measurable scientific parameters, specifically by establishing a link between ancestral cooking methods and modern rheological models. This study moves beyond cultural documentation, providing a transformative framework that positions traditional Sumba cuisine as a precursor to contemporary food engineering and sustainable culinary optimization
Pengaruh Model Pembelajaran Problem Based Learning Terhadap Hasil Belajar Siswa Pada Materi Ekosistem Sa’diah, Salsa Assiri Sa’diah; Chusni, Muhammad Minan; Kariadinata, Rahayu
International Journal of Science, Technology and Applications Vol 3 No 2 (2025): Volume 3 Number 2 Tahun 2025
Publisher : Alpatih Harapan Semesta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70115/0vn2b142

Abstract

This study aims to determine the effect of applying the Problem Based Learning (PBL) model on students’ learning outcomes in ecosystem material. The background of this research is based on the low learning outcomes of students due to teacher-centered and memorization-oriented learning methods. The PBL model was chosen because it emphasizes active student involvement in solving real-world problems, thereby enhancing conceptual understanding and critical thinking skills. This research employed a quantitative approach with a pre-experimental design using a one-group pretest-posttest design. The research subjects consisted of 33 eleventh-grade students who participated in biology learning using the PBL model. The research instrument was a learning achievement test administered before (pretest) and after (posttest) the implementation of the PBL model. Data analysis was conducted using the Paired Sample t-Test with the aid of SPSS version 25. The results showed that the average student learning score increased from 60.42 before the implementation of PBL to 82.61 after it. The t-test results indicated a significance value of 0.000 < 0.05, meaning there was a significant difference between learning outcomes before and after the treatment. The average N-Gain score of 56.36% indicated a moderate category, showing that the PBL model was effective in improving student learning outcomes.Thus, it can be concluded that the Problem Based Learning model has a positive and significant effect on improving students’ learning outcomes in ecosystem material. This model is effective as an alternative innovative learning strategy that encourages student activeness and conceptual understanding.

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