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All Journal POSITRON PRISMA FISIKA JURNAL FISIKA Jurnal Fisika Unand JGE (Jurnal Geofisika Eksplorasi) Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) BULETIN FISIKA Jurnal Fisika FLUX JOURNAL OF HEALTH SCIENCE (JURNAL ILMU KESEHATAN) Jurnal Surya Masyarakat BULETIN AL-RIBAATH GERVASI: Jurnal Pengabdian kepada Masyarakat Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan Jurnal Kumparan Fisika Jurnal Fisika dan Terapannya Bubungan Tinggi: Jurnal Pengabdian Masyarakat Jurnal Surya Masyarakat Akrab Juara : Jurnal Ilmu-ilmu Sosial Community Empowerment Jurnal Pemikiran Islam (JPI) SINTHOP: Media Kajian Pendidikan, Agama, Sosial dan Budaya Jurnal Ilmu dan Inovasi Fisika Wahana Fisika : Jurnal Fisika dan Terapannya JURNAL REKAYASA KIMIA & LINGKUNGAN
Zulfian Zulfian
Program Studi Geofisika, FMIPA Universitas Tanjungpura
Religion Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Penentuan Nilai Penyerapan Suara Pada Panel Dinding Beton Busa Sebagai Panel Alternatif Yang Ramah Lingkungan Zulfian, Zulfian; Abdullah, Abdullah; Fahridhal, Fahridhal
Jurnal Rekayasa Kimia & Lingkungan Vol 8, No 1 (2011): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Panel of foam concrete wall is a type of membrane panel which has maximum sound absorption and can create quite and environmentally friendly room. The purpose of this study was to determine the magnitudeof the sound absorption value using the Sabine formula in Reverberation Chamber at Syiah Kuala University acoustic laboratory. The result of this study show that peak value curve sound absorption of 0.67 accurs at the frequency of 250 Hz, and painting of the panel surface can increase the value of sound absorption to be 0.76 at the frequency of 250 Hz,but the slope of sound absorption value sharply decreased to be 0.07at the frequency of 1000 Hz. Treatment on the panel surface can increase or decrease the value of sound absorption especially at the low frequency regions.Keywords: Panel of foam concrete wall, Sabine formula, The value of sound absorption
Kajian tentang Kemungkinan Pemanfaatan Bahan Serat Ijuk sebagai Bahan Penyerap Suara Ramah Lingkungan Zulfian, Zulfian; Sajidin, Muhammad
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 2 (2009): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

The probability of application of palm fibre from arenga pinnata appear as best treatment for sound absorption material which can be used in controlling noise. The objective of this study is to determine sound absorption coefficient value of palm fibre through a testing the absorbent material, by applying sabine reverberation time formulation in reverberation chamber at Thermal and acoustics laboratory Syiah Kuala University. Result of this study show that sound absorption coefficient value is obtained 0.97, at 2000 Hz. Whereas thickness of material 20 cm with density of 150 kg/m3. Addition of density can increase sound absorption coefficient value in frequency range 1/3 octave. Proven that a comparison palm fibre and artificial material and consequently palm give better quality values because it economic value and friendly environment.Keywords: palm fiber, reverberation chamber, sound absorption coefficient
Pemodelan Inversi Metode Gravitasi Menggunakan Simulated Annealing Hakim, Yusuf Umar Al; Arman, Yudha; Zulfian, Zulfian
Jurnal Fisika Unand Vol 12 No 2 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.2.261-267.2023

Abstract

Metode gravitasi telah terbukti mampu menunjukkan jenis batuan dan mineral di bawah permukaan bumi dengan mengetahui perbedaan nilai densitasnya. Penentuan nilai densitas material ini perlu melibatkan proses inversi untuk mempersingkat waktu perhitungan. Metode inversi simulated annealing diterapkan pada data anomali gravitasi untuk menentukan jenis batuan, komponen posisi, dan struktur geologi bawah permukaan. Pada penelitian ini dibuat sebuah model sintetik berupa empat bola homogen. Ruang model berukuran 1000×1000 m dengan interval 200 m dan jumlah data 36. Parameter model yang digunakan yaitu posisi koordinat (x, y, z), jari-jari (r), dan densitas (ρ). Model sintetik yang digunakan ditambahkan noise sebesar 10% dengan sebaran seragam agar dapat dianggap sebagai data observasi. Hasil dari inversi ini diperoleh bahwa model inversi mendekati model sintetik yang diplot ke dalam peta kontur anomali gravitasi dan pencocokan kurva antara kurva anomali gravitasi observasi dan kurva anomali gravitasi inversi, serta dibuktikan juga dengan RMSE sebesar 0,0664.
Analisis Data Batimetri untuk Penentuan Alur Pelayaran Sungai Kapuas Desa Balai Belungai Kabupaten Sanggau Muqsit J.A, Ibrahim; Zulfian, Zulfian; Putra, Yoga Satria
JFT : Jurnal Fisika dan Terapannya Vol 12 No 2 (2025)
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v12i2.56211

Abstract

The Kapuas River is a river located in West Kalimantan. Especially in Balai Blungai Village, Toba District, Sanggau Regency, this area has an important role in the distribution of goods and the mobility of barges carrying sand and bauxite to the Kapuas estuary. The depth of the river can be determined based on bathymetry data. Bathymetry is a measure of the height and low contour of the water base (depth). The purpose of this study was to determine the variation in river depth and determine recommendations for transportation routes on the Kapuas River channel, Balai Belungai Village, Toba District, Sanggau Regency based on bathymetry data. The research method used is the interpolation method used for bathymetry refinement is the triangulation with linear interpolation method by calculating the value of a point against three points that have the closest distance so that in the end the depth contour value is obtained. The tracks for barymetric data parallel to the river are 3 tracks with a track length of 2.7 km to 4.5 km and 6 tracks intersect the three tracks with a track length of 906 m to 971 m. The distance between measurement points is 3 m. The results of the study showed that the bathymetry and current in the Kapuas River, Balai Belungi Village, Toba District, Sanggau Regency vary, with depths between -2 m to -10 m and surface currents of 1.31 m / s to 2.40 m. The recommended shipping lane for loaded ships and barges is at a depth of -5 m to -10 m, with a shipping lane width of 200 m to 500 m.
Identifikasi Lapisan Tanah Menggunakan Metode Geolistrik sebagai Kajian Awal Land Application di Desa Tinting Boyok Kabupaten Sekadau Zulfian, Zulfian; Hosea, Jeremi; Sutanto, Yuris
POSITRON Vol 15, No 2 (2025): Vol. 15 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v15i2.92188

Abstract

Limbah cair kelapa sawit dapat dimanfaatkan sebagai pupuk bagi tanaman kelapa sawit. Penelitian ini bertujuan untuk mengidentifkasi lapisan di bawah permukaan tanah khususnya di land application yang dapat digunakan sebagai rekomendasi lokasi pembuatan flatbed. Metode geolistrik resistivitas diterapkan untuk menduga lapisan di bawah permukaan tanah menggunkan konfigurasi Wenner-Schlumberger. Lintasan berjumlah 3 buah dengan panjang masing-masing 195 m. Data lapangan yang diperoleh kemudian dimodelkan menggunakan metode least squares inversion. Kedalaman lapisan yang diperoleh dari hasil inversi adalah 39,4 m. Hasil model dari ketiga lintasan, nilai resistivitas yang diperoleh adalah 8,54 Ωm hingga 1082 Ωm. Lapisan di bawah pemukaan diduga terdiri dari pasir, pasir lempungan, dan granodiorit lapuk. Lapisan pasir diduga memiliki nilai resistivitas sebesar 8,54 hingga 42,9 Ωm dan lapisan ini diduga mengandung air tanah. Lapisan pasir lempungan diduga memiliki nilai resistivitas sebesar 42,9 hingga 215 Ωm, dan lapukan batuan granodiorit memiliki nilai resistivitas sebesar 215 hingga 1082 Ωm. Lapisan pasir lempungan dan lapisan granodiorit lapuk yang direkomendasikan untuk pembangunan flatbed karena diduga berkategoi kurang permeable. Zona flatbed yang direkomendasikan pada lintasan L1 memiliki panjang total 135 m, lintasan L2 memiliki panjang total 140 m, dan lintasan L3 memiliki panjang 120 m. Pendugaan lapisan tanah dan rekomendasi posisi flatbed dapat digunakan oleh pemangku kepentingan untuk merancang dan membuat flatbed.
Co-Authors . Apriansyah A.A. Ketut Agung Cahyawan W Abdul Muid Abdullah Abdullah Abriyanti, Okta Adi Rahmad Adityo Raynaldo Agung, Medha Pradipta Alhuda, Ervan Andi Ihwan Apriany, Rina Asifa Asri Asifa Asri Auliansyah, Auliansyah Ayuningsih, Vita Lestari Azrual Azwar Azrul Azwar Bayangkari, Emilia Kristin Bintoro Siswo Nugroho Boni Pahlanop Lapanporo Carita, Hilda Grey Gayu D. Wahyuni Deni Alpito Saputra Dian Rahmawati Dwihastuty, Leny Dwiria Wahyuni dzulfahmi, dzulfahmi Esau Cornelius Fahridhal Fahridhal Febriyadi Romadhan Fitriana, Zuliya Eka Galuh Utamia Dillayati Gustiani, Siska H. Gemma Hakim, Yusuf Umar Al Harmawanda, Salsabila Hartono Hartono Hasanuddin Hasanuddin Hendri Hendri Hidayat Hidayat Hidayat, Erik Saputra Hosea, Jeremi Huaan, Hildegordis Ilyas, Nail Radhy Indah Yuliastuti, Indah Indra Sanjaya Purba, Indra Sanjaya Irawan, Muhamad Fajar Irfana Diah Faryuni Isbiantoro, Ryan Isharianto, Isharianto Jakarius, Jakarius Jayawarsa, A.A. Ketut Joko Sampurno Joko Sampurno Jumarang, Muh Ishak Juwaini Juwaini Kanyawan, Oktavia Erviana Karno - Karno Kushadiwijayanto, Arie Antasari Kusumardana, Setra Maghfianti, Azzahara Marwan, Ade Zahara Marzuki, M. Fathin Shafly Mazlan, Muhamad Fakarudin Bin Mega Nurhanisa Mega Sari Juane Sofiana Muh. Ishak Jumarang Muhammad Sajidin Muhammad Yusuf Muhardi Muliadi Muliadi Muliadi Muliadi Multazam, Multazam Muqsit J.A, Ibrahim Nurhasanah Nurhasanah Nursalam, Lodri Khairul Oktavia, Dwi Intan Okto Ivansyah Pangestu, Yogi Prabowo Perdana, Radhitya Perdhana, Radhitya Pranata, Dedy Pratomo, Rizky Dwi Purnama, Freddy Surya Purry, Allishya Purwaningrum, Ratna Putra, Novfreezal Iskandar Putra, Nurdin Satria Radhitya Perdhana Rahayu Rahayu Rahma, Aulia Rasyidin, Muhammad Amrul Rifatul Auzan Risko, Risko Riza Adriat Rolita, Devia Rudianto, Arif Rusmayanti, Rusmayanti Rusmini, Hetti Safira, Cut Siska Santi, Maria Aventri Satria Putra, Yoga Septiansyah, Muhammad Riyan Sri Rahayu Ningsih Sunardi Sunardi Suryani Suryani Susanto, Yuris Suwiryo, Karto Tegar Dharmawan Triningsih, Endang Triyono Triyono Tusy Triwahyuni Utami, Pratita Budi Vietsaman, Dionisius Endy Vikki Vikki Waras Selviani Octavia Widyastuti, Anggi Wildan, Raina Yesi Dwi Jayanti Yoga Satria Putra Yudha Arman Yuliana Nurmala Dewi Yuris Sutanto Yusuf Arief Nurrahman Yusuf Umar Al Hakim Zibar, Zan