Article Per Year (5 Year)
p-Index From 2021 - 2026
4.284
P-Index
This Author published in this journals
All Journal Al Ishlah Jurnal Pendidikan Jurnal Ilmiah Pendidikan Fisika PENDIPA Journal of Science Education Jurnal Pendidikan Matematika Raflesia BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Journal on Education Jurnal Kumparan Fisika JURNAL PENDIDIKAN MIPA Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Bioscientist : Jurnal Ilmiah Biologi Munaddhomah: Jurnal Manajemen Pendidikan Islam Jurnal Inovasi Pengabdian Masyarakat Pendidikan Jurnal Nasional Teknik Elektro dan Teknologi Informasi Amplitudo: Jurnal Ilmu dan Pembelajaran Fisika Aktual : Jurnal Pengabdian Kepada Masyarakat Andromeda: Jurnal Pengabdian Masyarakat Rafflesia Journal of Fuzzy Systems and Control (JFSC) Jurnal Biosilampari: Jurnal Biologi SPEKTRA: Jurnal Kajian Pendidikan Sains
Afrizal Mayub
Universitas Bengkulu
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

Published : 27 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 27 Documents
Search

 1   2   3 
Fuzzy-PID Control for Balancing a Two-Wheeled Inverted Pendulum Robot Fahmizal; Afrizal Mayub; Lintang Fathia Rafanah; Smail Latifa
Journal of Fuzzy Systems and Control Vol. 4 No. 1 (2026): Vol. 4 No. 1 (2026)
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/jfsc.v4i1.390

Abstract

A two-wheeled inverted pendulum robot (TWIPR) requires continuous control action because its upright position is inherently unstable and highly sensitive to disturbances. This research proposes the use of a fuzzy-PID controller to keep the TWIPR balanced. Although PID has several advantages, its performance can degrade when the system is subjected to changing conditions. To address this, fuzzy logic is applied to enhance the adaptive capabilities of the PID controller. The fuzzy system dynamically generates PID parameters based on predetermined fuzzy rules, effectively maintaining system stability. The fuzzy membership functions used, namely MF3, MF5, and MF7, were compared through no-load and loaded tests. In the no-load test, the fuzzy-PID with MF7 reduced rise time, settling time, overshoot, peak value, and peak time by 1.229%, 0.673%, 86.703%, 7.232%, and 2.952%, respectively, compared with those of the conventional PID. However, the MF3 configuration only excels in overshoot and peak time, while the MF5 configuration only shows improvements in settling time, overshoot, and peak value. Further testing results show that Fuzzy-PID with MF7 provides the most stable performance under load conditions.
Potensi Kombinasi Ekstrak Daun Matoa (Pometia pinnata) dan Ektrak Daun Kelor (Moringa oleifera) sebagai Antidiabetik Pada Mencit (Mus musculus) Terinduksi Alloksan Siti Haryani Muayadah; Aceng Ruyani; Afrizal Mayub; Bhakti Karyadi; Rendy Wikrama Wardana
SPEKTRA: Jurnal Kajian Pendidikan Sains Vol. 11 No. 2 (2025): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Physics Education Study Program, Faculty of Education and Teacher Training, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v11i2.9611

Abstract

Diabetes mellitus (DM) is a chronic metabolic disease whose prevalence continues to increase globally. Plant-based alternative therapy is becoming an increasingly popular option due to its minimal side effects. This study aims to test the potential of a combination of matoa (Pometia pinnata) and Moringa (Moringa oleifera) leaf extracts as an antidiabetic in alloxan-induced male mice (Mus musculus). The study was conducted experimentally with five treatment groups, including negative control, positive control, and three groups of extract combination doses (100, 225, and 300 mg/kg BB). Phytochemical tests showed the content of active compounds alkaloids, flavonoids, and steroids in the combination of extracts. Blood glucose level test results showed that the combination dose of 300 mg/kg BB (Dose III) was able to reduce blood glucose levels significantly and had comparable effectiveness with glibenclamide as a standard drug. Statistical analysis (One Way ANOVA and Post Hoc Bonferroni) confirmed that Dose III showed a significant difference compared to the lower dose, and was not significantly different from the positive control.Beyond these results, this study contributes new insights by highlighting the synergistic effect of combining two medicinal plants, providing a scientific basis for the development of standardized herbal formulations as potential alternatives in diabetes management.
Analisis Kandungan Asam Sianida (HCN) pada Rebung Bambu Kapal (Gigantochloa schortechinii) sebagai Bahan Makanan Roleka Julia Marcellina; Bhakti Karyadi; Rendy Wikrama Wardana; Euis Nursa’adah; Afrizal Mayub
SPEKTRA: Jurnal Kajian Pendidikan Sains Vol. 11 No. 2 (2025): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Physics Education Study Program, Faculty of Education and Teacher Training, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v11i2.9702

Abstract

This study aims to determine the effect of different lengths of soaking on cyanide acid (HCN) content in ship bamboo shoots (Gigantochloa schortechinii) which are the main ingredient in making Lemea. Lemea is a specialty food of the Rejang tribe in Bengkulu Province where the main ingredient of Lemea is fermented chopped bamboo shoots (young bamboo). This study used a completely randomized design (CRD) with five repetitions and four treatment levels, namely. A = no treatment/control, B = 4 days soaking, C = 5 days soaking, D = 6 days soaking and E = 7 days soaking. The results of the analysis showed that different lengths of soaking time had an effect on reducing cyanide acid (HCN) content. The highest to lowest average cyanide acid (HCN) content was obtained from treatments A (70.066 ppm), B (53.759 ppm), C (42.374 ppm), D (29.739) and E (16.458 ppm). The best cyanide acid (HCN) content was obtained in the immersion treatment for 7 days with an average HCN content of 16.458 ppm, this result is highly recommended because the HCN content is safe for consumption according to FAO (Food and Agriculture Organization).
Analisis Ketinggian Gelombang dan Kecepatan Angin Perairan Pesisir Bengkulu Farah Aulia Najwa; Henny Johan; Aprina Defianti; Afrizal Mayub; Lukmanul Hakim
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1402

Abstract

The purpose of this study is to describe wave height and wind speed in Bengkulu City over the last five years (2019–2024). This research employed a quantitative descriptive method. The data collection technique used secondary data obtained from documentation of the Meteorological, Climatological, and Geophysical Agency (BMKG) of Bengkulu Province. The data were analyzed using descriptive statistical analysis techniques. The results indicate that wave height and wind speed along the coastal waters of Bengkulu City varied significantly from January to December during the years 2019, 2020, 2021, 2022, 2023, and 2024. The months with the highest potential for high waves were June, July, August, and September, with an average wave height of 3.5–4 meters and wind speeds of 20–25 knots. The lowest and moderate waves occurred in January, February, March, April, May, October, November, and December, with wave heights ranging from 1.5–3.5 meters and wind speeds of 6–15 knots.
Design of Integrated Science Electronic Book Temperature and Heat Material Loaded with Ethnoscience Batik Besurek Bengkulu Dini Fajar Triana; Sutarno Sutarno; Bhakti Karyadi; Lina Mahardiani; Afrizal Mayub
Jurnal Ilmiah Pendidikan Fisika Vol 9, No 2 (2025): JUNE 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jipf.v9i2.15298

Abstract

Science learning in schools tends to be theoretical and less related to real contexts, so students have difficulty understanding the application of concepts in everyday life. One of the causes is the lack of teaching materials that integrate local wisdom. This study aims to examine the concepts of science in the local wisdom of making Batik Besurek to be developed as ethnoscience content in integrated science e-books and to determine the level of validity and student response to the product. The method used is research and development (R&D), according to Borg and Gall (1983), using the Model of Educational Reconstruction (MER) approach. Data were obtained through questionnaires, observations, and interviews. The results of the study showed that the process of making Batik Besurek contains the concepts of temperature and heat, expansion, changes in the state of matter, physical changes, heat transfer, and Black's principle, which can be integrated into the content of the Integrated Science Electronic Book. The developed electronic book obtained a very high level of validity with an average V index of 0.86 and a percent agreement of 89.27%. The students' response to the book was also excellent, with an average percentage of 89.42%. The results concluded that the Integrated Science electronic book containing the ethnoscience of Batik Besurek Bengkulu was considered valid teaching material worthy of being tested for effectiveness in future research.
Potensi Biomassa Pohon dan Emisi Karbondioksida Untuk Menilai Keseimbangan Karbon di Lingkungan Endah Tri Wahyuningsih; Bhakti Karyadi; Rendy Wikrama Wardana; Euis Nursa’adah; Afrizal Mayub
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 4 (2025): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i4.16620

Abstract

This study aims to analyze carbon emissions from motor vehicles and the potential for carbon absorption by vegetation on four main roads in Bengkulu City: Padang Jati, Hibrida, Pagar Dewa, and Sukarami. The approach used is quantitative-descriptive, with data collected through traffic surveys and direct measurements of vegetation parameters during the observation period. Emissions are calculated using emission factors based on IPCC/KLHK standards according to vehicle type, while tree biomass is analyzed using allometric equations based on trunk diameter, track length, and vegetation type. Carbon analysis on four roads in Bengkulu City shows a significant imbalance between vehicle emissions and vegetation absorption. Sukarami recorded the highest emissions (751,813 kg CO₂) with a biomass of only 24,053 kg (absorption of 40,607 kg), making it a carbon source. Conversely, Padang Jati had the largest biomass (881,578 kg) compared to emissions of 431,889 kg CO₂, making it a carbon sink with absorption of 344%. Hibrida and Pagar Dewa showed intermediate conditions, with emissions of 424,145–570,063 kg CO₂ and absorption of 544,349–947 kg, indicating an unbalanced absorption capacity. These results emphasize the need to increase vegetation cover and manage green spaces as strategies for mitigating urban climate change.
Robotics Workshop to Increase Motivation and Science Literacy of SMP IT Khairu Ummah Rejang Lebong Students Afrizal Mayub; M. Lutfi Firdaus; Fahmizal Fahmizal; Aceng Ruyani; Lazfihma Lazfihma; Deshinta Arrova Dewi
Aktual: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 1 (2025): Aktual: Jurnal Pengabdian Kepada Masyarakat January 2025
Publisher : CV Media Inti Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58723/aktual.v3i1.347

Abstract

This activity aims to Increase the Motivation and Science Literacy of SMP IT Khairu Ummah Rejang Lebong Students. This activity is one form of implementing the tridharma of higher education. One of the tri dharmas of higher education is community service, this service activity is an activity that every lecturer must carry out, therefore lecturers in the Master of Science program at Bengkulu University collaborated with IT SMP teacher Khairu Ummah Rejang Lebong Bengkulu on September 28, 2024, to carry out service activities at SMP IT Khairu Ummah Rejang Lebong. This collaboration takes the form of community service activities at SMP IT Khairu Ummah Rejang Lebong Bengkulu with the title "Robotics Workshop to Increase Motivation and Science Literacy of SMP IT Khairu Ummah Rejang Lebong Students". From these activities, it can be concluded that the teaching material delivered at the Robotics Workshop uses interactive multimedia which includes lectures, virtual demos, animations, visualizations, simulations and videos which have proven successful in motivating students in the motivated category with a score of 3.84 and increasing scientific literacy in the high category with a score of 3.93.
Co-Authors ACENG RUYANI Agus Setyowati Annisatul Jannah Arsela Eko Listiono Bebby Rino Oksatianti Bhakti Karyadi Bukman Lian, Bukman Cariti Dassa Urra Dede Solihudin Dedy Hamdani Defianti, Aprina Deni Parlindungan Deshinta Arrova Dewi Dhiya Uddin Rijalussalam Dini Fajar Triana Dwi Canna Orenta Elcane Ega Marita Delima Eka Nur Indah Septioningrum Eko Risdianto Elda Handayani Elda Elza Heryensi Euis Nursa’adah Fahmizal Fahmizal Fahmizal Fahmizal Fahmizal Farah Aulia Najwa Farid, Muchammad Fatimah Azzahrah Fitri April Yanti Henny Johan Irwan Koto Lazfihma Lazfihma Lina Mahardiani Lintang Fathia Rafanah Lukmanul Hakim M. Anas Thohir M. Lutfi Firdaus M. Sutarno Ma’un Budiyanto Muhammad Arrofiq Mail Nadia Fitria Wulandari Niki Dwi Dia Dara Noorzana Khamis Nursaadah, Euis Rendy Wikrama Wardana Rinda Fitri Handayani Risma Afrida Sari Roleka Julia Marcellina Siti Haryani Muayadah Smail Latifa Sutarno Sutarno Ur Aniliawati Wahyuningsih, Endah Tri