Article Per Year (5 Year)
p-Index From 2021 - 2026
1.853
P-Index
This Author published in this journals
All Journal Jurnal Fisika Unand Jurnal Kimia Riset Jurnal Pengabdian UNDIKMA Magnetic: Research Journal of Physics and It’s Application Indonesian Community Journal Jurnal Riset Fisika Indonesia INOVASIA Khidmatuna: Journal of Research and Community Service Najwa Jurnal Masyarakat Berdikari dan Berkarya (MARDIKA)
Gabriela Elsandika
Universitas Palangka Raya
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

Published : 12 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 12 Documents
Search

 1   2 
PELESTARIAN KEARIFAN LOKAL MANUGAL DI DESA SUMBER GARUNGGUNG KECAMATAN DUSUN TENGAH KABUPATEN BARITO TIMUR Wulandari; Suryadi, Achmad; Azahra, Nur Shellae; Agustianti, Wandry; Irawan, Aldi; Arifin, Samsul; Agustiani, Reni; Elsandika, Gabriela
Jurnal Masyarakat Berdikari dan Berkarya (Mardika) Vol 2 No 2 (2024): Jurnal Masyarakat Berdikari dan Berkarya (MARDIKA)
Publisher : Fakultas Teknik, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/mardika.v2i2.10219

Abstract

Kegiatan pengabdian kepada masyarakat ini dilaksanakan di Desa Sumber Garunggung, Kecamatan Dusun Tengah, Kabupaten Barito Timur. Tim mengajak masyarakat untuk melaksanakan pertanian berkelanjutan dengan tetap menjunjung tinggi kearifan lokal melalui sistim bahuma atau berladang. Kegiatan bahuma yang dipilih yaitu manugal, menanam padi di lahan kering. Proses manugal dilakukan bertahap sesuai dengan adat istidat masyarakat setempat. Kegiatan ini bertujuan untuk melestarikan kembali budaya nenek moyang agar tidak hilang di kalangan generasi muda. Selain itu kegiatan manugal dapat memberikan dampak positif bagi masyarakat lokal dan global, seperti meningkatkan solidaritas, dan melestarikan budaya.
Pelatihan dan Pendampingan Kelompok Tani dalam Mengolah Limbah Pertanian Menjadi Ekoenzim di Kelurahan Bukit Tunggal Ahmad Saefulloh; Reni Agustiani; Gabriela Elsandika; Julius Telaumbanua; Valentino Tabang; Khairi Khairi; Fitriani Fitriani
I-Com: Indonesian Community Journal Vol 4 No 3 (2024): I-Com: Indonesian Community Journal (September 2024)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/icom.v4i3.5271

Abstract

This training and mentoring activity for farmer groups in processing agricultural waste into eco-enzymes aims to address the problems faced by farmers in Bukit Tunggal Village. The community service team views this problem as a priority to be solved given the current environmental issues, especially regarding waste management. The method used by the team in implementing the community service activities refers to four important stages to achieve the desired outcomes. The first is preparation. The second is program socialization, focusing on inviting partners to dialogue about the planned activities and providing motivation related to improving the welfare of farmer groups through available resources. The third is Training and Mentoring Farmer Groups in Processing Fruit and Vegetable Waste Produced from the Surroundings into Eco-enzymes. The training is conducted by providing material on eco-enzymes both theoretically and practically. Fourth, evaluation. The results of this training and mentoring activity show that the training was enthusiastically followed by 35 participants from all farmer groups in Bukit Tunggal Village. The activity was considered successful based on the pre-test and post-test conducted by the team. Only 25% of training participants knew about eco-enzymes at the time of the pre-test, but after the training activity, participants' understanding increased to 90% regarding the making of eco-enzymes.
Enhancing Students’ Presentation Skill using Digital Media at SMAN 10 Palangka Raya Yonatan Ari Santoso; Gabriela Elsandika; Reni Agustiani; Samsul Arifin
Khidmatuna (Jurnal Pengabdian Kepada Masyarakat) Vol 2 No 1 (2023): November
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/khidmatuna.v2i2.345

Abstract

The purpose of this activity is to overcome the issue of tedious presentations by the students of SMAN 10 Palangka Raya. This issue occurs due to the lack of students' digital literacy, affecting their public speaking abilities. For this reason, the team provided the use of digital media mentoring to students for problem-solving. The digital media used in this activity were Prezi and Canva. The mentoring used explanation and learning-by-doing methods. The activity was held on May 2023. The students received the information well. It was proven by the questionnaires that were answered, 92.3% stated that this activity was useful to enhance the knowledge of the use of digital media in presentations. They stated that this activity could help make presentations more interesting and interactive.
Sintesis dan Karakterisasi Silika Sekam Padi sebagai Material Self-Cleaning Elsandika, Gabriela; Dirgantara, Made; Beladona, Siti Unvaresi Misonia; Pasaribu, Marvin Horale
Jurnal Fisika Unand Vol 14 No 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.2.124-130.2025

Abstract

This study aimed to valorize rice husk waste by extracting silica and developing a self-cleaning surface coating. Silica was successfully extracted from rice husk ash via an alkaline reflux method followed by acid precipitation. The extracted silica exhibited an amorphous structure with a high purity of 96.7%, as confirmed by X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis. Subsequent modification with Trimethylchlorosilane (TMCS) significantly enhanced the hydrophobicity of the silica, resulting in a contact angle of 99.84° with water. The synthesized silica-based material demonstrates promising potential as a self-cleaning surface coating, offering improved durability and ease of maintenance.
Synthesis and Characterization of Rubber Seed Shell-Derived Activated Carbon by KOH Activation Gabriela Elsandika; Budi Hariyanto; Panggabean, Lady M.; Sihombing, Feridah A.; Hakim, Luqman
INOVASIA Vol 2 No 2 (2024): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/inovasia.v2i2.353

Abstract

This study presents the preparation and characterization of activated carbon derived from rubber seed shells using potassium hydroxide (KOH) activation. The raw material for this investigation was obtained from rubber seed shells collected from local rubber plantations in Palangka Raya. The activation process involved the use of the chemical activator KOH at a 1:1 carbon-to-KOH ratio in 200 mL of distilled water for a duration of 24 hours. X-ray Diffraction (XRD) analysis confirmed that the resulting activated carbon exhibited an amorphous structure, and all Fourier-Transform Infrared Spectroscopy (FTIR) spectra indicated the presence of functional groups in the activated carbon. The activated carbon possessed a porous structure with a surface area and total pore volume of 2.24 m2/g and 0.02 cm3/g, respectively. These findings necessitate further optimization of the activation process to achieve a larger surface area, thus enabling its application in electronic materials, water treatment, and various other fields.
Degradation of Humic Acids in Peat Water Using Fe3O4 Synthesized from Zircon Sand Tailing as Photo-Fenton Catalyst Toepak, Erwin Prasetya; Pasaribu, Marvin Horale; Agnestisia, Retno; Elsandika, Gabriela
Jurnal Kimia Riset Vol. 10 No. 1 (2025): June
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkr.v10i1.66061

Abstract

Zircon sand mining in Indonesia generates magnetic waste rich in magnetite (Fe₃O₄), which has semiconductor properties, making it an effective catalyst for degrading organic pollutants. This study explores the synthesis and application of Fe₃O₄ derived from zircon mining waste as a photo-Fenton catalyst for humic acid (HA) degradation in peat water. The Fe₃O₄ catalyst was synthesized using a co-precipitation method, confirmed by FTIR and XRD analyses. FTIR identified Fe–O bonds at 537 cm-1 and 419 cm-1, while XRD showed a spinel crystal structure with peaks at 2θ angles of 30.14°, 35.51°, 43.19°, and 56.96°. The catalytic activity was tested under UV light with varying H₂O₂ volumes and Fe₃O₄ masses. The optimized condition, using 0.03 g Fe₃O₄ and 1 mL H₂O₂, achieved a maximum HA degradation efficiency of 87.06% in 100 minutes. Kinetic analysis revealed second-order kinetics, with a rate constant (k) of 8.29 × 10-4 M-1.min-1 and R² = 0.9911, showing a strong correlation. The high efficiency is attributed to Fe₃O₄'s semiconductor properties, which facilitate hydroxyl radical formation and enhance electron transfer. These findings demonstrate the potential of Fe₃O₄ from zircon mining waste as a sustainable catalyst for environmental applications, particularly in treating organic pollutants in peat water.
Sistem Monitoring Kesuburan Lahan Pertanian menggunakan Sensor pH, Sensor Suhu, Intensitas Cahaya, dan Kelembapan Tanah Berbasis Internet of Things Arifin, Samsul; Kurniawati, Neny; Agustiani, Reni; Elsandika, Gabriela
Jurnal Riset Fisika Indonesia Vol 5 No 2 (2025): Juni
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v5i2.5334

Abstract

This study developed an Internet of Things (IoT)-based soil fertility monitoring system to measure soil pH, soil moisture, and light intensity in real time, specifically for peatland agriculture. The system utilizes pH sensors, soil moisture sensors, and light intensity sensors calibrated with standard measuring instruments to ensure accuracy. Calibration results indicate that the pH sensor has an average error of 0.151%, the soil moisture sensor 1.11%, and the light intensity sensor 6.152%, with the latter exhibiting the highest variation due to environmental factors. Monitoring data shows that soil pH fluctuates more during the day (4.45–4.60) compared to a more stable range at night (4.75–4.80). Soil moisture remains high during the day at 85–90%, while at night, it gradually increases from 25% to 35%. Light intensity fluctuates between 9000–12000 lux during the day and approaches 0 lux at night. With high accuracy and real-time data accessibility, this system can assist farmers in optimizing irrigation, fertilization, and peatland soil management using IoT-based technology, ensuring sustainable agricultural productivity in peatland environments.
Sistem Monitoring pH Air, Total Dissolved Solids (TDS) dan Kekeruhan Air pada Tandon berbasis Internet of Things (IoT) Samsul Arifin; Agustiani, Reni; Iashania, Yunida; Elsandika, Gabriela; Sina, Ibnu; Khairi
Magnetic: Research Journal of Physics and It’s Application Vol. 5 No. 2 (2025): Magnetic: Research Journal of Physics and It’s Application
Publisher : Program Studi Fisika - Universitas San Pedro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59632/magnetic.v5i2.634

Abstract

Air bersih merupakan kebutuhan pokok seluruh masyarakat di Indonesia. Di daerah Kalimantan Tengah, terutama Kota Palangka Raya mempunyai permasalahan air tanah yang kondisinya asam dikarenakan berlahan gambut. Seringkali air tanah dari lahan gambut tersebut langsung dipakai tanpa memperhatikan kualitas air. Dari permasalahan tersebut perlu dikembangkan sistem monitoring pH air, Total Disolved Solids (TDS) dan pengukuran tingkat kekeruhan air yang akan ditempatkan pada tandon air warga berbasis Internet of Things (IoT). Penelitian ini bertujuan memantau kualitas air secara real time sehingga dapat membantu masyarakat dalam mengelola air bersih. Metode penelitian meliputi perancangan sistem monitoring, kalibrasi sensor, uji coba sistem di lapangan, evaluasi dan analisis data. Hasil penelitian menunjukkan data kalibrasi sensor pada sistem monitoring pH air, TDS, dan kekeruhan air pada tandon mempunyai nilai error dibawah 1% sehingga mempunyai kualitas yang baik. Data eror sensor pH air sebesar 0.202% pada rentang 0.02% hingga 0.45%, sedangkan sensor TDS memiliki nilai error 0.367% dengan variasi 0.04% hingga 0.69%, dan sensor kekeruhan nilai errornya 0.36%, dengan kisaran 0.1% hingga 0.6%. Selanjutnya dalam monitoring secara real time menggunakan Thingspeak data perameter dapat terpantau dengan baik, yaitu data pH air berada di rentang 6-10, kemudian nilai TDS berada di rentang 0-100%, dan nilai kekeruhan air fluktuatif berada di rentang 0-160NTU.  Dengan hasil ini, sistem yang dikembangkan dalam memonitoring kualitas air mampu memberikan data yang akurat untuk mendukung pemantauan kualitas air.
Upaya Meningkatkan Minat Baca dan Kesadaran Literasi Siswa Melalui Program KKN di Desa Hendrawan, Risky Pratama; Hanand , Zanuar Hafidz Asani; Enjelika; Serlinawati; Amelia; Putri, Fanie Mardina; Afifullah, Rahmad; Elsandika, Gabriela
NAJWA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 3 No. 1 (2025): Mei
Publisher : LP2M Institut Agama Islam Negeri (IAIN) Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30762/najwa.v3i1.329

Abstract

The Literacy Culture Work Program was implemented by students of the Regular Community Service Program (KKN) Period I from the University of Palangka Raya in Kandris Village, Karusen Janang District, East Barito Regency. The program aimed to enhance reading interest and literacy skills among students at SDN and TK Mandiri Kandris. Activities included teaching, literacy education on social issues, school environmental greening, and decorating school walls with inspirational words. Despite challenges such as low reading interest and an unclean school environment, the program successfully motivated students to become more engaged in reading and learning. The outcomes indicated increased participation and literacy awareness among students. The program's sustainability is expected to strengthen the literacy culture in Kandris Village and improve the quality of human resources in the region.
Pelatihan Pengolahan Limbah Perkebunan sebagai Pakan Tambahan Ternak di Kelompok Tani Buah Naga Palangka Raya Elsandika, Gabriela; Agustiani, Reni; Ma'rifah, Siti; Heni, Anisa Nugraha; Jahra, Alvia; Justin, Axel Berkat; Setiawan, M. Abdur Rofiq
Jurnal Pengabdian UNDIKMA Vol. 6 No. 4 (2025): November
Publisher : LPPM Universitas Pendidikan Mandalika (UNDIKMA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jpu.v6i4.17606

Abstract

This community service program aims to improve the understanding and skills of the Kelompok Tani Mulyo (Mulyo Farmer Group) in processing dragon fruit stem waste into an alternative poultry feed. The method employed was a community empowerment-based training approach, which included stages of observation, implementation, and evaluation. The evaluation instruments consisted of pre-test and post-test questionnaires, which were analyzed using a descriptive comparative technique to measure the improvement in partners’ knowledge and skills. The results of this program showed an increase in participants’ technical understanding of waste processing from 41.5% to 100%. Most participants who initially hesitated or lacked understanding of the processing techniques are now capable of independently producing feed. This improvement demonstrates that the training was effective in transferring knowledge and skills, providing a concrete solution for waste management and promoting product diversification through the creation of additional livestock feed.
Co-Authors Afifullah, Rahmad Agustianti, Wandry Ahmad Saefulloh Amelia Azahra, Nur Shellae Bryan Faith Situmorang Budi Hariyanto Enjelika Erwin Prasetya Toepak Fitriani Fitriani Hanand , Zanuar Hafidz Asani Hendrawan, Risky Pratama Heni, Anisa Nugraha Ibnu Sina Irawan, Aldi Jahra, Alvia Julius Telaumbanua Justin, Axel Berkat Khairi Khairi Khairi Kurniawati, Neny Luqman Hakim Ma'rifah, Siti Made Dirgantara Marvin Horale Pasaribu Panggabean, Lady M. Putri, Fanie Mardina Reni Agustiani Reni Agustiani Reni Agustiani, Reni Retno Agnestisia Salsa Ayudhia Pratama Samsul Arifin Samsul Arifin samsul arifin Serlinawati Setiawan, M. Abdur Rofiq Sihombing, Feridah A. Siti Unvaresi Misonia Beladona Suryadi, Achmad Valentino Tabang Valentinus Waruwu WULANDARI Yonatan Ari Santoso Yunida Iashania Yunita Enzelina Silaban