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Kormil Saputra
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Synthesis and Characterization of TiO2/CaTiO3 Perovskite Composite Derived from Pinctada maxima Shell Waste Kurniawidi, Dian W.; Rahayu, Susi; Budianto, Arif; Saputra, Kormil; Agista, Wida Puteri; Suprayogi, Thatit; Marlina, Resti
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.924-942

Abstract

This study has succeeded in synthesizing and characterizing TiO2/CaTiO3 perovskite composites using calcium carbonate (CaCO3) from shellfish waste (Pinctada maxima). Synthesis was carried out through the coprecipitation method with variations in the molar ratio of CaCO3:TiO2 and calcination temperatures (700oC, 800oC, and 900oC). Characterization was carried out using FTIR, DTA-TG, XRD, SEM-EDS, BET and UV-Vis. The results of the analysis showed that the calcination temperature affected the powder color, crystal structure, thermal properties and particle size. The DTA-TG analysis shows that increasing the calcination temperature up to 900oC significantly reduces mass loss to 51.88%, with minimal thermal events, indicating the formation of a thermally stable and well-crystallized TiO2/CaTiO3 structure. At a temperature of 900oC, a more perfect CaTiO3 was formed with the whitest powder color, the anatase and brookite phases of TiO2 were still detected, while the calcite phase was still found at a temperature of 700oC. The morphology of the samples showed agglomeration with increasingly uniform particle sizes at higher calcination temperatures. Complementary BET analysis confirms that the composite possesses a mesoporous structure with a specific surface area of 11.42 m2/g and a pore size distribution of 3-5 nm, making it suitable for adsorption and photocatalytic applications. UV-Vis analysis showed an increase in the band gap value along with the increase in the TiO2 ratio. This is also confirmed by the presence of Urbach energy which tends to increase with increasing TiO2 ratio.
Exploring The Influence of Electrode Material on Electrical Impedance Spectroscopy: A Comparative Analysis Ahmad Zarkasi; Mohammad Asrul; Kholis Nurhanafi; Rahmawati Munir; Amirin Kusmiran; Kormil Saputra
Frontier Advances in Applied Science and Engineering Vol. 2 No. 2 (2024)
Publisher : Tinta Emas Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/faase.v2i2.279

Abstract

Electrodes play a crucial role in impedance measurements using the EIS method. This study undertook a comparative analysis of impedance measurement outcomes using aluminum, iron, stainless steel, copper, and tin electrodes with mineral water and distilled water as the measurement objects. The impedance Bode plots for mineral water and distilled water showed similar trends across all electrodes, while the phase difference trends varied. In this experiment, copper electrodes emerge as the preferred choice due to their consistently low impedance, particularly at higher frequencies, and their stable phase difference patterns. Additionally, copper electrodes showed superior stability up to 25 kHz, while tin electrodes remained stable up to 50 kHz, albeit valid only from a frequency of 100 Hz. The varying impedance and phase difference in mineral water measurements align with the Warburg impedance circuit, due to the presence of more complex capacitive and inductive elements. Furthermore, measurements with distilled water showed a uniform Bode plot pattern of both impedance and phase difference across all electrodes, making the Randles circuit approach the most appropriate choice in this case. Overall, all electrode types exhibited distinct characteristics.
Correlation Between Building Damage Levels and Microtremor HVSR Curve Parameters Baiq Laelatin Diniati; Syamsuddin, Syamsuddin; Bakti Sukrisna; Kormil Saputra; Ika Umratul Asni Aminy; Rahmatun Inayah; Adella Ulyandana Jayatri; Shamim Mahabubul Haque
Frontier Advances in Applied Science and Engineering Vol. 2 No. 2 (2024)
Publisher : Tinta Emas Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/faase.v2i2.382

Abstract

The level of damage caused by an earthquake is related to the physical parameters obtained from Horizontal-to-Vertical Spectral Ratio (HVSR) analysis. The dominant frequency (f0) and wave velocity are the two HVSR parameters used. This research aims to determine the type of rock and the level of damage to buildings caused by the 2018 Lombok earthquake. We used secondary data from the 2011 Mataram City microtremor, which included 85 measurement points. We conducted frequency spectrum analysis using the HVSR method and shear wave velocity (vs) inversion modeling to gain a comprehensive understanding of Mataram City seismic properties. The Poisson ratio analysis results reveal that earthquake-prone sedimentary layers dominate Mataram City. The HVSR analysis revealed a negative correlation between the damage from the 2018 earthquake and the dominant frequency and shear wave velocity. The overlay results between the dominant frequency values, shear wave velocity, and the comparison of vp and vs with the damage level from the 2018 earthquake demonstrate this.
Development of Articulate Storyline-Based Media for Momentum and Impulse Material in Grade X Senior High Schools, Indonesia Dimas Mahendra; Dewi Kgajar Fitriana; Khusaini, Khusaini; Bakhrul Rizky Kurniawan; Kormil Saputra
Education Specialist Vol. 2 No. 2 (2024): July-December
Publisher : Tinta Emas Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/es.v2i2.295

Abstract

This study aims to develop an android application-based learning media that is literacy-oriented on Momentum and Impulse material and can be run on most devices owned by students. The creation goes through several stages in its formation. Through an application on a computer or laptop called Articulate Storyline, it is developed in such a way as to become a learning media that can be used in everyday learning. With the development model used is the ADDIE model. This model was chosen because it has research steps that are systematically arranged. The steps of the ADDIE research and development procedure consist of five stages, namely Analyze, Design, Develop, Implementation and Evaluation. Which is intended for teachers and students of State High School (SMAN) 2 Pare and State Islamic High School (MAN) Paser with supporting data for material and media validation tests. The results of the study produced 91% for the media validation test and 83% for the results of the material validation test and it can be said that the learning media is very suitable for use. While the test results for teachers and students at MAN Paser and also SMAN 2 Pare each showed 90% and 94% for teachers and 90% and 89% for students.
Descriptive Analysis of the Effectiveness of Learning Physics for Biology at Mataram University Cahaya Rizkika Imanda; Maratus Soleha; Mira Suhada; Wahyu Lina Ramadani; Baiq Nabila Nasywa; Halia Safitri; Kormil Saputra; Fatima Naimi
Education Specialist Vol. 3 No. 1 (2025): January-June
Publisher : Tinta Emas Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/es.v3i1.415

Abstract

This study aimed to evaluate the effectiveness of physics learning for biology students at the University of Mataram, focusing on understanding, application of concepts, and the relevance of materials to biological studies. The research employed a quantitative approach using a Likert-scale questionnaire distributed to 40 Biology program students. Data were analyzed using descriptive statistics to identify trends in students' perceptions of the effectiveness and satisfaction with physics learning. The results revealed that most students considered physics learning moderately effective, particularly through practical sessions, although the prevalence of neutral responses indicated a need to improve material relevance and teaching methods. Practical sessions significantly supported concept comprehension, yet challenges remained in connecting physics materials to practical applications in biology. Student satisfaction with teaching methods was relatively positive, but improvements in material delivery and laboratory facilities were also highlighted as critical areas. This study recommends strengthening the integration of physics with biological contexts, optimizing practical sessions, and developing teaching methods utilizing interactive technology and case studies to enhance student engagement.
Community Empowerment Through the Sustainable Food House Program Using Hydroponic Planting Media in the Sungai Batu Dendeng Community Care Group Dwi Septia Kari; Kormil Saputra; Syamsuddin, Syamsuddin
Media for Empowerment, Mobilization, and Innovation in Research & Community Vol. 1 No. 1 (2025): January-June
Publisher : Future Tecno-Science Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/39ywnn03

Abstract

The purpose of this Community Service Program (KKN) is to try to introduce the community to the hydroponic planting system. Hydroponic planting media itself is a method of farming using water as the main focus. Hydroponics is a method that can be developed and applied in the household sector. The goal to be achieved from this KKN activity is to develop hydroponic land that can be utilized by residents, reduce household waste such as plastic bottles that can be utilized as hydroponic planting media, and invite the community to participate in protecting their environment and develop the KMPS Batu Dendeng river community where the river is the main focus of the KMPS community, Dasan Geres Selatan Village. The results of the development of this method are expected to make the community better understand the hydroponic farming system and be able to develop it independently and utilize used waste and household waste, such as plastic bottles. So that it can reduce the problem of environmental pollution in the area. One simple way that can be used to increase public awareness of the environment is to utilize used plastic bottles as a planting medium using the concept of wick hydroponics or wick system.
Developing Students' Potential Skills Through the Implementation of Educational Activities Outside the School Environment in the Post-Pandemic Era Yunitun Tamara; Syahrial A; Muhammad Zuhdi; Dian Wijaya Kurniawidi; Syamsuddin, Syamsuddin; Kormil Saputra; Rahmatun Inayah; Ika Umratul Asni Aminy; Adella Ulyandana Jayatri
Media for Empowerment, Mobilization, and Innovation in Research & Community Vol. 1 No. 1 (2025): January-June
Publisher : Future Tecno-Science Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/c5x64z03

Abstract

Community service in Narmada Village, West Lombok, aimed to improve the quality of science and technology literacy learning through a contextual and educational approach. These activities included teaching practices using simple teaching aids, training in developing locally-based Lesson Plans (RPPs), and digital image security education using the SCBIE encryption algorithm. Results showed significant improvements in students' understanding of science concepts and active participation, as well as teachers' skills in designing relevant RPPs. Furthermore, an understanding of the effectiveness of the SCBIE algorithm was gained, with the use of a single key yielding higher e-RMS values, indicating a stronger encryption level. A comparison of the performance of algorithms A and B was also discussed during the training, emphasizing the importance of balancing speed, accuracy, and memory efficiency in implementing image cryptography. This activity significantly contributed to improving educational capacity and digital literacy at the village level.
Utilization of Home Yards for Making Vertical Planting Media in the Dasan Geres Tengah Environment, Dasan Geres Village, Gerung District, West Lombok Regency Handriani, Handriani; Syamsuddin, Syamsuddin; Kormil Saputra; Rahmatun Inayah; Ika Umratul Asni Aminy; Adella Ulyandana Jayatri
Media for Empowerment, Mobilization, and Innovation in Research & Community Vol. 1 No. 1 (2025): January-June
Publisher : Future Tecno-Science Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/vk6n5046

Abstract

The Dasan Geres Tengah neighborhood of Dasan Geres Village, Gerung District, West Lombok Regency, has a standard economic condition because the community has an average livelihood as Farmers and Traders. The role in contributing to creating new skills to be developed in the village by young men and women and housewives in particular is not very exposed by the people in the area. In this regard, the role of youth groups and housewives in the Dasan Geres Tengah neighborhood is expected to be able to create initiatives in making simple skills activities, a small example of which is the use of land in developing food houses that can be used continuously, so that it can be useful in helping to facilitate the basic daily needs of housewives in particular.
Building Resilient Communities Through Earthquake and Tsunami Disaster Education and Mitigation at Aik Belek State Elementary School, Montong Ajan Village, Central Lombok Syamsuddin, Syamsuddin; Rahmatun Inayah; Ika Umratul Asni Aminy; Nela Ranita Amanda; Ahmad Rifaldi Arahman; Muhammad Ihzan; Siti Azizah; Ziyadatun Adawiyah; Ayu Mona Erisa Marpaung; Kormil Saputra
Media for Empowerment, Mobilization, and Innovation in Research & Community Vol. 1 No. 1 (2025): January-June
Publisher : Future Tecno-Science Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/6hzjkj06

Abstract

Montong Ajan Village is one of the areas in East Lombok Regency that has a high level of vulnerability to earthquakes and tsunamis, considering its location close to the Sumba Megathrust zone. The lack of disaster literacy among the community, especially elementary school children, is a major challenge in disaster mitigation efforts. This community service activity aims to improve disaster mitigation knowledge and skills through an educational and participatory approach. The activity was carried out at Aik Belek State Elementary School (SDN), with methods that included delivering visual materials, group discussions, earthquake evacuation simulations, introducing local risk maps, and practicing preparing disaster preparedness bags. The results of the activity showed an increase in participants' understanding of emergency response steps and high enthusiasm in participating in the simulation. In addition, teachers and schools showed a commitment to integrating disaster education into thematic learning activities. This activity is expected to be the first step towards the formation of a resilient community that is able to respond to disasters quickly, appropriately, and independently.
Earthquake and Tsunami Disaster Risk Mapping and Mitigation Strategy in Torok Aik Belek Hamlet: Community-Based Approach Syamsuddin Syamsuddin; Rahmatun Inayah; Ika Umratul Asni Aminy; Adella Ulyandana Jayatri; Kormil Saputra; Suhayat Minardi; Alfina Taurida Alaydrus; Dian Wijaya Kurniawidi
Media for Empowerment, Mobilization, and Innovation in Research & Community Vol. 1 No. 1 (2025): January-June
Publisher : Future Tecno-Science Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59535/nfzp4m45

Abstract

Indonesia has a high level of geological disaster threat due to its location at the meeting point of three tectonic plates, making coastal areas, such as Lombok Island, very vulnerable to earthquakes and tsunamis. Although Lombok has a history of earthquakes (2018) and tsunamis (1977), initial observations in Torok Aik Belek Hamlet, South Lombok, show that community awareness and preparedness for disaster mitigation are still low, exacerbated by unverified information on social media and the perception of underestimating potential hazards. This study aims to conduct participatory earthquake and tsunami risk mapping in Torok Aik Belek Hamlet and develop community-based mitigation strategies. The implementation methods include initial assessment, coordination with BMKG, presentation of materials, interactive counseling, and community empowerment as a disaster preparedness team. The results of the activities show clear identification of disaster-prone locations (for example, residential areas near the coast and concrete buildings) and vulnerable groups. Utilization of local potential, such as hills as evacuation routes and disaster-resilient village status, is the basis for developing disaster mitigation strategies. The formation of a local community in Torok Aik Belek Hamlet involving residents and members of the Disaster Resilient Village is a crucial step. It is hoped that this effort can significantly increase the preparedness of the Torok Aik Belek Hamlet community and contribute to an adaptive and sustainable community-based mitigation development model.
Co-Authors Adella Ulyandana Jayarti Adella Ulyandana Jayatri Aditya Yoga Purnama Agista, Wida Puteri Agness Claundya NT Ahmad Rifaldi Arahman Ahmad Taufiq Ahmad Zarkasi Ainiyah Fatin Alfina Taurida Alaydrus Alifni Aulia Amirin Kusmiran Anggun Almadani Anisa Anisa Apriani Apriani Arif Budianto Arif Hidayat Arin Artha Callista Ariyanthi, Gita Putri Ayu Mona Erisa Marpaung Baiq Adilya Putri Humaira Fatarani Baiq Laelatin Diniati Baiq Nabila Nasywa Baiq Revalina Restu Khaunifar Bakti Sukrisna Cahaya Rizkika Imanda Chanakan Sojayapan Chusna, Nadiya Miftachul Deatun Zahra Dewi Kgajar Fitriana Dian W. Kurniawidi Dian Wijaya Kurniawidi Dimas Mahendra Dionysius J. D. H. Santjojo Dwi Septia Kari Elen Renata Putra Fajariman, Ilham Dias Fatima Naimi Fauziana Hidayat Fina Nahdia Fitri Gina Fadilla Gusti Ayu Niatri Halia Safitri Handriani, Handriani Hendra Susanto I Wayan Sudiarta Ika Umratul Asni Aminy Indah Nur Gusfiana Indrawan Eka Badri Istiroyah Kholis Nurhanafi Khuzaima, Nabila D. Kurniawan, Bakhrul Rizky Kurniawidi, Dian W. Laili Hidayati Laksono, Yoyok Adi Setio Luluk Tsaroya Zarkasyi Madani, Awanda OP. Maratus Soleha Markus Diantoro Marlina, Resti Marzuki Marzuki Masruroh Masruroh MASRUROH Melani Melani Mira Suhada Mislan Mohammad Asrul Muhammad Hardiansyah Muhammad Ihzan Muhammad Jarul Rozki Muhammad Zuhdi Munir, Rahmawati Nabila Dwi Septia Nahdatul Wesi Najma Aldina Roshin Nandang Mufti Nela Ranita Amanda Nur Azzahra Al Radiyah Nurhasmi Wahyuni Nurjannah Nurjannah Nurmutyah Naylah Nurwijayanti Rahadi Wirawan Rahmatun Inayah Ramadian Ridho Illahi Retna Apsari Saefullah, Lalu Sayida Magfirah Sembiring, Rinawati Shamim Mahabubul Haque Siti Azizah Sofiana Aprilia Suhayat Minardi Sunaryono Sunaryono Sunaryono, Sunaryono Susi Rahayu Syahrial A Syamsuddin Syamsuddin Syamsuddin Teguh Ardianto, Teguh Thathit Suprayogi Umratun Hasanah Wahyu Lina Ramadani Wahyudin Wahyudin Wida Puteri Agista Wulandari, Nurul Putri Yuliana, Futri Yunan Amza Muhammad Yunitun Tamara Ziyadatun Adawiyah Zyiadatun Adawiah