https://ejournal.unib.ac.id/kumparan_fisika/issue/feed 2025-04-30T00:00:00+00:00 Aprina Defianti aprina.defianti@unib.ac.id Open Journal Systems <p>Jurnal Kumparan Fisika is an open access and double blind peer-reviewed journal that contains articles on the results of research on teaching physics, learning physics, physics theory, and applied physics. Jurnal Kumparan Fisika is managed by the Physics Education Study Program of the Teaching and Education Faculty of Universitas Bengkulu. Jurnal Kumparan Fisika is published in April, August and December a year by Unib Press. Jurnal Kumparan Fisika received e-ISSN <a href="https://issn.lipi.go.id/terbit/detail/1515598548">2655-1403</a> in 2018 and p-ISSN <a href="https://issn.lipi.go.id/terbit/detail/1560827953">2685-1806</a> in 2019. Jurnal Kumparan Fisika has been indexed in DOAJ since 2019 and accredited as SINTA 4 on April 2020 and as <strong>SINTA 3</strong> on April 2022.</p> https://ejournal.unib.ac.id/kumparan_fisika/article/view/35215 2024-08-27T16:20:28+00:00 Zulfian Zulfian zulfiantabrani@physics.untan.ac.id Yuris Susanto zulfiantabrani@physics.untan.ac.id

<p><strong>A</strong><strong>B</strong><strong>S</strong><strong>T</strong><strong>R</strong><strong>A</strong><strong>K</strong></p> <p> </p> <p>Limbah cair kelapa sawit telah diterapkan di lahan aplikasi yang berada di Desa Tinting Boyok, Kabupaten Sekadau, Provinsi Kalimantan Barat. Tujuan penelitian ini adalah untuk mengidentifikasi limbah cair kelapa sawit yang merembes ke dalam tanah. Rembesan limbah ini dikhawatirkan menurunkan kualitas air tanah. Metode yang digunakan untuk mencapai tujuan tersebut adalah metode geolistrik resistivitas dengan konfigurasi Wenner-Schlumberger. Penelitian ini menggunakan dua lintasan geolistrik dengan panjang lintasan sebesar 195 m. Identifikasi limbah cair kelapa sawit dilakukan berdasarkan nilai resistivitas yang diperoleh dari proses pemodelan menggunakan metode inversi Gauss-Newton. Dari proses inversi tersebut, penampang resistivitas yang diperoleh dapat menyatakan nilai resistivitas sebenarnya. Nilai resistivitas yang diperoleh dari hasil inversi adalah 4,53 Ωm s.d. 950 Ωm. Dari nilai resistivitas tersebut, lapisan tanah yang terdapat pada daerah penelitian berupa lapisan pasir, pasir lempungan dan lapukan granodiorit. Lapisan pasir diduga sebagai tempat akumulasi limbah cair kelapa sawit di dalam tanah. Limbah cair kelapa sawit diduga memiliki nilai resistivitas 4,53 Ωm s.d. 9,7 Ωm. Limbah cair kelapa sawit memiliki nilai resistivitas yang lebih kecil karena mengandung <em>Chemical Oxigen Demand </em>(COD) dan <em>Biochemical Oxygen Demand</em> (BOD) tinggi serta logam hingga logam berat. Rembesan limbah ini diduga terdeteksi dari kedalaman 2 m s.d. 6,5 m pada lintasan 1 dan 2 m s.d. 24 m. Formasi geologi dan topografi mempengaruhi rembesan limbah pada lintasan 1 dan lintasan 2.</p> <p> </p> <p>Kata kunci— metode geolistrik, limbah cair kelapa sawit, resistivitas</p> <p> </p> <p><strong>ABS</strong><strong>T</strong><strong>R</strong><strong>A</strong><strong>C</strong><strong>T</strong></p> <p> </p> <p>Palm oil mill effluent (POME) has been applied to the application site located in Tinting Boyok Village, Sekadau Regency, West Kalimantan Province. The objective of this research is to identify the seepage of palm oil mill effluent into the soil. This seepage is concerning as it may degrade the quality of groundwater. The method used to achieve this objective is the resistivity geoelectric method with the Wenner-Schlumberger configuration. This study utilized two geoelectric lines, each with a length of 195 meters. The identification of palm oil mill effluent was based on resistivity values obtained from the modeling process using the Gauss-Newton inversion method. From this inversion process, the resistivity cross-section obtained can represent the actual resistivity values. The resistivity values obtained from the inversion results range from 4.53 Ωm to 950 Ωm. Based on these resistivity values, the soil layers in the study area consist of sand, clayey sand, and weathered granodiorite layers. The sand layer is suspected to be the accumulation zone for palm oil mill effluent within the soil. The palm oil mill effluent is estimated to have resistivity values ranging from 4.53 Ωm to 9.7 Ωm. The effluent exhibits lower resistivity values due to its high Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) content, as well as the presence of metals and heavy metals. The seepage of this effluent is suspected to be detected at depths ranging from 2 meters to 6.5 meters on line 1, and from 2 meters to 24 meters on line 2. Geological formations and topography influence the seepage of the effluent on both line 1 and line 2..</p> <p> </p> <p>Keywords— geoelectrical method, palm oil mill efflunet, resistivity</p>

2025-04-30T00:00:00+00:00 Copyright (c) 2025 Zulfian, Yuris Susanto https://ejournal.unib.ac.id/kumparan_fisika/article/view/36239 2024-08-05T14:20:13+00:00 Wilda Hayati hayatiw286@gmail.com Husna Husna hayatiw286@gmail.com Megasyani Anaperta hayatiw286@gmail.com

<p><strong>ABSTRAK</strong></p> <p> </p> <p>Penelitian ini dilatarbelakangi oleh proses belajar mengajar fisika peserta didik di SMA Negeri 1 Tigo Nagari belum optimal dan keaktifan peserta didik masih kurang, sehingga nilai peserta didik belum mencapai Kriteria Ketuntasan Minimal (KKM). Oleh karena itu, diperlukan sebuah pembelajaran yang menarik minat belajar peserta didik sehingga bisa terbentuknya suasana belajar yang baik. Adapun salah satu pembelajaran yang diterapkan adalah Pembelajaran Science, Technology, Engineering and Mathematics (STEM). Tujuan penelitian ini adalah untuk melihat pengaruh penerapan pembelajaran Science, Technology, Engineering and Mathematics terhadap berpikir kritis peserta didik kelas XI SMA Negeri 1 Tigo Nagari. Jenis penelitian yang digunakan adalah Quasi Eksperiment Design dengan desain penelitian Posstest only control group design. Pengambilan sampel dilakukan dengan teknik cluster random sampling dimana sampel diambil secara acak berdasarkan kelompok/wilayah tertentu. Hasil belajar diambil dari Instrumen pada penelitian adalah tes akhir berbentuk essay untuk ranah kognitif dan lembar aktivitas peserta didik selama pembelajaran disetiap pertemuan untuk ranah afektif. Hasil penelitian yang diperoleh adalah hasil belajar ranah kognitif kelas eksperimen rata-rata 77,41, sedangkan kelas kontrol 68,62. Hasil penilaian pada ranah afektif kelas eksperimen rata-rata 80 sedangkan kelas kontrol ranah afektifnya 77. Selanjutnya dilakukan uji hipotesis menggunakan uji Mann Whitney didapatkan hipotesis diterima. Sehingga dapat disimpulkan terdapat pengaruh penerapan pembelajaran Science, Technology, Engineering and Mathematics terhadap hasil belajar peserta didik kelas XI SMA Negeri 1 Tigo Nagari.</p> <p> </p> <p>Kata Kunci: Pembelajaran stem; hasil belajar ; uji Mann Whitney</p> <p> </p> <p><strong>ABS</strong><strong>T</strong><strong>R</strong><strong>A</strong><strong>C</strong><strong>T</strong></p> <p> This research was motivated by the physics teaching and learning process of students at SMA Negeri 1 Tigo Nagari which was not yet optimal and students' activeness was still lacking, so that students' grades had not yet reached the Minimum Completeness Criteria (KKM). Therefore, learning is needed that attracts students' interest in learning so that a good learning atmosphere can be formed. One of the lessons implemented is Science, Technology, Engineering and Mathematics (STEM) learning. The aim of this research is to see the effect of implementing Science, Technology, Engineering and Mathematics learning on the critical thinking of class XI students at SMA Negeri 1 Tigo Nagari. The type of research used is Quasi Experimental Design with a Posttest only control group design research design. Sampling was carried out using a cluster random sampling technique where samples were taken randomly based on certain groups/regions. The learning outcomes taken from the research instrument are a final test in the form of an essay for the cognitive domain and student activity sheets during learning at each meeting for the affective domain. The research results obtained were that the experimental class' cognitive domain learning results averaged 77.41, while the control class's average was 68.62. The assessment results in the affective domain of the experimental class averaged 80 while the affective domain of the control class was 77. Next, a hypothesis test was carried out using the Mann Whitney test, it was found that the hypothesis H_1 was accepted. So it can be concluded that there is an influence of the application of Science, Technology, Engineering and Mathematics learning on the learning outcomes of class XI students at SMA Negeri 1 Tigo Nagari. Keywords: Stem learning; learning outcomes ; Mann Whitney test</p>

2025-04-30T00:00:00+00:00 Copyright (c) 2025 Wilda Hayati, Husna Husna, Megasyani Anaperta