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All Journal POSITRON Jurnal Fisika Unand JGE (Jurnal Geofisika Eksplorasi) Jurnal Fisika FLUX Jurnal Pengabdian Kepada Masyarakat (Mediteg) Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Lontar Physics Today Jurnal Natural Scientiae
Simon Sadok Siregar, Simon Sadok
PS Fisika, FMIPA, Universitas Lambung Mangkurat
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Effect of Soil Geochemical on The Chemical Properties of Lignocellulosic Oil Palm Fibers Tetti Novalina Manik; Sri Wahyuni; Nurul Hikmah; Ahmad Bakri; Simon Sadok Siregar
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 3 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i3.16068

Abstract

Correlation of geochemical of soil and chemical properties of oil palm fiber from the trunk, empty fruit bunches and fronds has been investigated. Frond samples come from dryland and wetland to have more significant results. The chemical properties of topsoil and lignocellulosic fiber were investigated by FT-IR. The geology of soil was investigated by 1D Geoelectric. Measuring of the content of cellulose and lignin according to SNI 14-0444-1989 and SNI 0492-1989-A. Base on research, the geochemical properties of soil are correlated with the chemical properties of the lignocellulosic fiber of the oil palm trees. The cellulose content of wetlands fiber has the lowest than other fibers. This is caused by soil nutrients which are composed of carbonyl and phenolic compounds. Alkalization treatment on the fiber has increased the cellulose content of each fiber. The alkalization treatment increases the adhesive properties. Based on the geology and chemical properties of soil, the land of oil palm trees is composed of clay minerals composed of Si-O-Si, carbonyl, phenol bonds and others.
Geofisika dan Geokimia Lahan Gambut Terdegradasi Tanah Timbun Manik, Tetti Novalina; Purba, Santi Carolina; Khayanti, Yuni Sri; Haryanti, Ninis Hadi; Sudarningsih, Rusdiansyah; Siregar, Simon Sadok
Lontar Physics Today Vol 4, No 2 (2025): June 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v4i2.23153

Abstract

Penelitian ini bertujuan untuk mengembangkan LKPD berbasis proyek yang valid dan praktis untuk melatihkan creative thinking skills dan self-regulated learning pada materi energi alternatif. Jenis penelitian ini adalah Design and Development Research (DDR) yang diadaptasi dari Richey Klien (2007) dengan menggunakan uji validitas yang terdiri atas validasi empiric dan validasi expert, serta uji kepraktisan yang terdiri atas uji keterbacaan, uji persepsi guru, dan uji respon peserta didik, uji keefektifan terdiri atas hasil analisis terlatihnya creative thinking skills dan self-regulated learning dalam kelompok kecil. Hasil uji validasi empiric dilihat berdasarkan keberhasilan produk biobaterai. Hasil uji validasi expert didapatkan rata-rata nilai dari ketiga expert sebesar 3,24, dengan rata-rata nilai pada aspek media dan desain diperoleh sebesar 3,32 dengan kategori sangat valid, dan aspek materi dan konstruk diperoleh sebesar 3,15 dengan kategori valid. Hasil uji kepraktisan diperoleh skor rata-rata untuk uji keterbacaan sebesar 83,8% dengan kategori sangat praktis, uji persepsi guru sebesar 87,3% dengan kategori sangat baik, serta uji respon peserta didik sebesar 84,7% dengan kategori sangat baik, didapatkan rerata skor uji kepraktisan sebesar 85,3% dengan kategori sangat praktis. Uji keefektifan dilihat berdasarkan hasil analisis terlatihnya creative thinking skills diperoleh hasil 81% dan analisis terlatihnya self-regulated learning diperoleh hasil 83,6%. Telah dihasilkan LKPD untuk melatihkan creative thinking skills dan self-regulated learning yang valid, praktis, dan efektif dalam kelompok kecil.
Identifikasi Batuan Andesit Menggunakan Metode Geolistrik 2D di Daerah Pengaron, Kalimantan Selatan Simamora, Selvy Tiurma; Wahyono, Sri Cahyo; Siregar, Simon Sadok
Jurnal Fisika Unand Vol 9 No 4 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.9.4.487-494.2020

Abstract

Telah dilakukan penelitian untuk mengidentifikasi lapisan batuan andesit menggunakan metode geolistrik 2D dengan konfigurasi Schlumberger di daerah Pengaron, Kalimantan Selatan. Pengukuran dilakukan untuk lima lintasan dengan panjang tiap lintasan 270 m. Tujuan dari penelitian ini adalah memodelkan penampang lintang nilai resistivitas 2D, menentukan jenis litologi, kedalaman dan ketebalan batuan andesit di daerah penelitian. Berdasarkan hasil pengolahan data diperoleh tiga lapis jenis batuan. Lapisan pertama merupakan lapisan top soil dengan nilai resistivitas 39–116 Ωm, lapisan kedua adalah lempung dengan nilai resistivitas 143–298 Ωm dan lapisan ketiga merupakan batuan andesit dengan nilai resistivitas 320–1.000 Ωm. Hasil interpretasi 2D menunjukkan bahwa batuan andesit memiliki nilai resistivitas 382–1.000 Ωm pada kedalaman 10-77 m dan ketebalan 10–55 m. Research has been carried out to identify andesite rock layers using 2D geo-electrical method with Schlumberger configuration in the Pengaron area, South Kalimantan. Measurements were made for five tracks with a length of each track being 270 m. The purpose of this research is to model the cross section of 2D resistivity values, determine the type of lithology, depth and thickness of andesite rocks in the study area. Based on the results of data processing, three layers of rock types were obtained. The first layer is the top soil layer with a resistivity value of 39–116 Ωm, the second layer is clay with a resistivity value of 143–298 Ωm and the third layer is andesite rock with a resistivity value of 320–1,000 Ωm. The 2D interpretation results show that andesite rocks have a resistivity value of 382–1,000 Ωm at a depth of 10-77 m and a thickness of 10–55 m.
Interpretasi Struktur Bawah Permukaan Menggunakan Metode Magnetik di Sekitar Gedung Auditorium ULM Banjarbaru, Kalimantan Selatan Safitri, Normala; Siregar, Simon Sadok; Sudarningsih, Sudarningsih; Manik, Tetti Novalina
Jurnal Natural Scientiae Vol 5, No 2 (2025)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jns.v5i2.17485

Abstract

Subsurface interpretation research has been carried out using the magnetic method with the aim of knowing the value of magnetic anomalies and subsurface rock structures around the ULM Banjarbaru Auditorium Building.In this study, data was collected using the PPM G-856 tool, which performed up to 55 measurements with a 5 m spacing between points.  According to the research findings, the magnetic field anomaly values in the study area range -1252.2 nT – 1725.4 nT. The 2D modeling results show that the study area is the Dahor formation, which consists of claystone,siltstone, and rock sand. The results of measuring the susceptibility value of each rock are 0.01; 0.015 and 0.018 SI for claystone,  0.001 and 0.0011 SI for siltstone, and 0.02 SI for rock sand.
Co-Authors A.A. Ketut Agung Cahyawan W Ahmad Bakri Akhmat Faisal Al Rosyid, Ulil Abror Anak Agung Gede Sugianthara Arfan Eko Fahrudin Arifudin Arifudin Ayi Nurhidayah Baiti, Hisna Binar Utami Daratun Nurrahmah Darminto . Denok Dwi Priyanti Dinisa Hanifa Dwi Asmaul Husna Erihartanti Erihartanti Erihartanti, Erihartanti Fahruddin Fahruddin Ghofallena, Wenny Habib Hanifa, Dinisa Hisna Baiti I Ketut Suada Ibrahim Sota Ibrahim Sota Ichsan Ridwan Ida Ayu Putu Sri Widnyani Iwan Yahya Julkipli Julkipli Julkipli Julkipli, Julkipli Khayanti, Yuni Sri Krisologus Genesa Atmadja Manik, Tetti Novalina Marjuni Marjuni Marjuni Marjuni Mashuri Mashuri MIftahul Munir Muhammad Fadhil Muhammad Fadhil Muhammad Hasan Basri Muhammad Zainuri Muliawati Muliawatiq Muliawatiq, Muliawati Ninis Hadi Haryanti, Ninis Hadi Nurlina Nurlina Nurrahmah, Daratun NURUL HIKMAH Ori Minarto Priyanti, Denok Dwi Puji Astutik PUJI ASTUTIK Purba, Santi Carolina Rampan, Reko Ary Reko Ary Rampan Rusita, Siti Safitri, Normala Santoso, Tanto Budi Selvy Tiurma Simamora Shaliha, Shaliha Simamora, Selvy Tiurma Siti Rusita Sri Cahyo Wahyono Sri Wahyuni Sudarningsih Sudarningsih Sudarningsih Sudarningsih Sudarningsih, Rusdiansyah sugiyanti sugiyanti Suminar Pratapa Suryajaya Suryajaya Suryajaya Suryajaya, Suryajaya Tetti Novalina Manik Tetti Novalina Manik Totok Wianto Utami, Binar Wenny Habib Ghofallena Widya Utama Widya Utama