Article Per Year (5 Year)
p-Index From 2020 - 2025
0.92
P-Index
This Author published in this journals
All Journal JOURNAL ONLINE OF PHYSICS Jurnal Fisika : Fisika Sains dan Aplikasinya Journal of Earth and Marine Technology (JEMT) Jurnal Pijar MIPA ARembeN
Jayatri, Adella Ulyandana
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Transportation

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Preliminary Research for Fault Identification as Disaster Mitigation in Sumbawa Besar Using Geophysics and Geology Methods Hayatuzzahra, Sayidatina; Jayatri, Adella Ulyandana; Desiasni, Rita
Journal of Earth and Marine Technology (JEMT) Vol 4, No 2 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v4i2.5704

Abstract

Faults are conditions under which rocks are displaced from their original positions. Its presence is closely related to its high tectonic activity. Fault movement can trigger earthquake disasters. Therefore, various studies on faults are important for carrying out disaster mitigation efforts. This study aims to identify the existence of faults in Sumbawa Besar as a disaster mitigation effort. The method used was a combination of geophysical methods and geological field observations. Geophysical methods include the average shear wave method (VS30) and the gravity method. The geological method consists of direct geological observations (geomorphology and structural geology) in the research area. The results of research based on geophysical methods, namely the gravity method, showed that in the research area, there were indications of thrust faults, which were then strengthened by VS30 analysis, which showed the existence of weak zones along the suspected fault lines. The results of field data collection and geological data analysis show that no surface fault characteristics were found in the research area.
Fabrication of Fe3O4/PEG 4000/Oleic Acid Ferrofluids on Crystal Structure and Magnetic Properties Using Rhee Sumbawa Iron Sand Bahtiar, Syamsul; Islam, Izzul; Jayatri, Adella Ulyandana; Widyawati, Fauzi; Yanuar, Emsal
Jurnal Pijar Mipa Vol. 20 No. 1 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i1.8108

Abstract

The fabrication of ferrofluid using Fe3O4 nanoparticles synthesized from Rhee Sumbawa iron sand has been successfully carried out. This fabrication was conducted to study the crystal structure characteristics and magnetic properties of the ferrofluid from Rhee iron sand. The fabrication used the co-precipitation method at room temperature to synthesise Fe3O4 nanoparticles. In contrast, the ferrofluid fabrication employed a magnetic stirrer with the addition of PEG 4000/Oleic Acid as a surfactant. The structure and magnetic characteristics of the Fe3O4/PEG 4000/AO ferrofluid will be investigated in this work. The results of the XRF characterization show an Fe content of 91.73%, indicating that the purity of Fe has been successfully increased using a permanent magnet separation method. The XRD characterization results show the formation of a cubic crystal system with lattice parameters a=b=c = 9.3797 Å, α=β=γ = 90°, and the crystal size obtained from the refinement is 8.42 nm. The TEM characterization results indicate that the morphology of the nanoparticles is spherical with a particle size of 7.34 nm. The VSM characterization results obtained the ferrofluid magnetization value in the 0.08–0.34 emu/g range.
Penentuan Intensitas Longsor Sebagai Dasar Untuk Meningkatkan Fasilitas Kesehatan Dalam Mengurangi Risiko Bencana Longsor di Desa Lenangguar Retongga, Nofrohu; Hayatuzzahra, Sayidatina; Safitra, Roby Mardiyan; Desiasni, Rita; Nuraga, Welly Handa; Jayatri, Adella Ulyandana
ARembeN Jurnal Pengabdian Multidisiplin Vol. 3 No. 1 (2025): ARemBeN Edisi Juni
Publisher : CV. Ro Bema

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69688/aremben.v3i1.115

Abstract

Tujuan dari pengabdian adalah mengetahui Tingkat intensitas longsor di sepanjang jalan Lenangguar – Lunyuk dan mengetahui kelengkapan fasilitas kesehatan serta kesiapan Puskesmas Lenangguar dalam menangani korban akibat bencana longsor sehingga dapat meminimalisir risiko bencana Longsor. Pengabdian ini terdiri dari empat tahap, yaitu: Studi literatur digunakan sebagai acuan dasar untuk memperkuat latar belakang dalam pengabdian ini, penentuan intensitas longsor di sepanjang Jalan Lenangguar – Lunyuk, wawancara Kepala Puskesmas Lenangguar dan salah satu Dokter yang bertugas untuk mengetahui Tingkat fasilitas dan jumlah tenaga medis di Puskesmas Lenangguar, sosialisasi intensitas longsor, kesiapan dan kelengkapan puskesmas lenangguar dalam menghadapi bencana longsor kepada Kepala Desa Lenangguar untuk pemberitahuan kepada Masyarakat. Puskesmas Lenangguar hanya memiliki 2 Dokter, 12 Perawat, 1 Ambulan, Obat-obatan cukup terbatas, dan juga keterbatasan alat-alat medis sehingga hanya bisa menangani luka-luka lecet. Intensitas longsor yang cukup banyak dan sering terjadi saat musim hujan di Jalan Lintas Lenangguar – Lunyuk sehingga Puskesmas Lenangguar direkomendasikan untuk meningkatkan fasilitas sehehatan, tim medis, melakukan pelatihan manajemen bencana dan disaster plan sehingga mengurangi risiko bencana longsor dan meningkatkan ketahanan masyarakat dalam menghadapi bencana.
UTILIZATION OF CROSS-SECTION DIGITIZATION FROM 2D GEOELECTRIC RESULTS TO VISUALIZE THE SHAPE OF THE SAUNG CAVE CAVITY AS A GEOEDUCATIONAL POTENTIAL Aminy, Ika Umratul Asni; Syamsuddin, Syamsuddin; Minardi, Suhayat; Inayah, Rahmatun; Jayatri, Adella Ulyandana; Izyatin, Nazla
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 10 No 2 (2025): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v10i2.24355

Abstract

This study was conducted to detect and visualize the presence of cave cavities in the Saung Penggembur Cave area, Central Lombok, to support efforts to develop the area as a geo-educational facility. The method used was 2D resistivity geophysics with a Wenner configuration on four measurement lines. The data obtained were processed using Res2dinv software to produce subsurface cross-sections. The cross-section results from the four measurement lines showed continuously increasing values with increasing depth. These results were then digitized to visualize the cave's shape based on the obtained resistivity values. Cave cavities were assumed to have high resistivity values ranging from 725 to 1000 Ωm. These values were found at a depth of 2.5 m, or even deeper. These results indicate that the presence of cave cavities varies at each point. This condition is supported by field observations showing the presence of a hole above the surface. These results are interpreted as an indication of the presence of cavities or cave passages. This study provides an initial overview of subsurface geological conditions and demonstrates the efficacy of the 2D geophysical method in non-invasively identifying hollow zones. These findings are important for supporting further geological exploration, the preservation of karst areas, and the development of geoeducation's potential as a natural laboratory.
IDENTIFIKASI AKUIFER AIR TANAH MENGGUNAKAN METODE GEOLISTRIK VERTICAL ELECTRICAL SOUNDING (VES) DI DAERAH SELAPARANG, NUSA TENGGARA BARAT Multi, Warni; Wijaya, Arif; Jayatri, Adella Ulyandana
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 2 (2024): JOP (Journal Online of Physics) Vol 9 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i2.31983

Abstract

Telah dilakukan investigasi akuifer air tanah di daerah Selaparang, Kota Mataram, Nusa Tenggara Barat dengan menggunakan metode geolistrik resistivitas konfigurasi Schlumberger. Tujuan dari penelitian ini adalah mengidentifikasi akuifer air tanah di daerah tersebut. Pengukuran data dilakukan di tiga titik yaitu SLPRG-1, SLPRG-2, dan SLPRG-3. Panjang lintasan SLPRG-1 adalah 225 meter sedangkan SLPRG-2 dan SLPRG-3 mencapai 150 meter dengan spasi 1 meter. Pengolahan data dilakukan dengan IPI2WIN untuk memperoleh gambaran distribusi resistivitas batuan secara 1D. Hasil interpretasi menunjukkan bahwa struktur batuan yang menyusun bawah permukaan di daerah penelitian terdiri atas lempung, pasir, batu pasir, batu gamping, dan kerikil. Dari tiga titik pengukuran, potensi akuifer air tanah tersusun atas pasir dan batupasir yang terletak pada rentang kedalaman 1,04 hingga 90,78 meter. Litologi pasir dan batu pasir tersebut merupakan jenis sedimen yang diprediksi cukup baik di daerah penelitian karena bersifat permeabel untuk menyimpan dan meloloskan air.   
Co-Authors Aminy, Ika Umratul Asni Arif Wijaya Bahtiar, Syamsul Fauzi Widyawati Hayatuzzahra, Sayidatina Inayah, Rahmatun Izyatin, Nazla izzul islam Multi, Warni Nofrohu Retongga Nuraga, Welly Handa Rita Desiasni Safitra, Roby Mardiyan Suhayat Minardi Syamsuddin Syamsuddin Yanuar, Emsal