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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Teknosains: Media Informasi Sains dan Teknologi Jurnal Geomine Neutrino Jurnal Fisika dan Terapannya Jurnal Pertambangan dan Lingkungan
Rahmaniah Rahmaniah
Department Of Physics, Science And Technology Of Faculty, Universitas Islam Negeri Alauddin Makassar Jl. H.M. Yasin Limpo 36 Gowa 92118
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Engineering Environmental Science Physics

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KOEFISIEN PENYERAPAN BUNYI BAHAN AKUSTIK DARI PELEPAH PISANG DENGAN VARIASI UKURAN SERAT Novita Suherman; Ihsan Ihsan; Rahmaniah Rahmaniah
JFT : Jurnal Fisika dan Terapannya Vol 7 No 2 (2020): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i2.13801

Abstract

This study aimed to determine the effect of fiber size of the sound absorption coefficient of acoustic material of banana. In this study, the size of the fiber used is 10 mesh, 20 mesh, and 40 mesh wi th a board thickness of 1cm. The value of the frequency used is 125 Hz, 250 Hz, 500 Hz, 1000 Hz, and 2000 Hz. The result showed that the smaller the size of the fiber, the more high sound absorption coefficient is generated. Good sound absorption coefficient is the mesh size of 40 with a frequency of 125 Hz at a thickness of 1 cm is equal to 0.255. This suggests that the acoustic boards made of banana can be used as a silencer because it meets the ISO 11654 standard.
STUDI KUALITAS FILM PLASTIK BIODEGRADABLE BERBASIS PATI JAGUNG KETAN (ZEA MAYS CERATINA) DENGAN PENAMBAHAN KITOSAN DAN VIRGIN COCONUT OIL (VCO) Nur Safitri; Rahmaniah Rahmaniah; Iswadi Iswadi
JFT : Jurnal Fisika dan Terapannya Vol 8 No 1 (2021): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i1.21211

Abstract

Biodegradable plastics are plastics made from renewable sources and are biodegradable and environmentally friendly. To minimize the use of synthetic plastics, research was carried out on the manufacture of biodegradable plastics from glutinous corn starch (Zea mays. Ceratina) with the addition of chitosan and Virgin Coconut Oil (VCO). This study aims to see the quality of the biodegradable plastic film of glutinous corn starch with the addition of chitosan and VCO. The quality test carried out is a mechanical test consisting of a water resistance absorption test, a tensile strength test and an elongation test. FTIR analysis and biodegradability tests were also carried out. The results showed that the water-resistance test results were sample A of 42.86%, sample B of 25% and sample C of 14.29%. To test the tensile strength obtained sample A of 18.1667 MPa, sample B of 0.5171 MPa and sample C of 2.7215 MPa. For the elongation test, sample A was 2.8%, sample B was 3.85%, and sample C was 1.92%. The FTIR analysis results of the three samples showed C-H and O-H groups' presence derived from the constituent materials and the presence of C = O and C-O groups indicating that the hydrogel could be degraded. In the biodegradability test, it is known that the addition of chitosan and VCO during the decomposition of the material because it has anti-microbial properties. The data analysis carried out obtained data that met the SNI value for the tensile strength of sample A.
Pengaruh Inhibitor Alami Dari Biji Nangka Terhadap Laju Korosi Baja Karbon Tinggi Andi Devi Sri Anjani; Ihsan; Rahmaniah
JFT : Jurnal Fisika dan Terapannya Vol 10 No 1 (2023): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v10i1.28548

Abstract

Jackfruit seed has considerable potential to be used as a corrosion inhibitor because its anti-oxidant content can inhibit the corrosion rate of the metal. This study aimed to determine the effect of variations in immersion time on the corrosion rate, the efficiency of jackfruit seed extract in inhibiting the corrosion rate, and the type of corrosion that occurs in high-carbon steel without and with inhibitors. This study used the maceration method to extract jackfruit seeds. It used the weight loss method to determine the value of the corrosion rate in the sample and used SEM testing to determine the type of corrosion that occurred in the sample. This research yielded corrosion rate values ​​in immersion without inhibitor solutions for 10 days, 20 days, and 30 days respectively, namely 263,46 mpy, 365,93 mpy, and 426,92 mpy. Whereas immersion using inhibitor solutions for 10 days, 20 days, and 30 days respectively, resulted in corrosion rate values ​​of 71,62 mpy, 53.41 mpy, and 44.95 mpy. These results resulted in inhibition efficiency values ​​of 72,81%, 85,40%, and 89,47%. The SEM test produced the type of corrosion that occurred in samples without an inhibitor solution, namely pitting corrosion. For immersion in an inhibitor solution, the type of corrosion that occurred was uniform corrosion.
IDENTIFIKASI ZONA AKUIFER MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS DI DESA BORONGLOE KECAMATAN PA’JUKUKANG KABUPATEN BANTAENG Hijriana Anwar; Rahmaniah Rahmaniah; Wahyuni Ayusari
JURNAL PERTAMBANGAN DAN LINGKUNGAN Vol 3, No 1 (2022): JUNI 2022
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpl.v3i1.9055

Abstract

Telah dilakukan penelitian yang berjudul identifikasi zona akuifer menggunakan metode geolistrik resistivitas di desa Borongloe kecamatan Pa’jukukang kabupaten Bantaeng yang bertujuan untuk mengetahui litologi batuan di desa Borongloe dan untuk mengetahui sebaran akuifer air tanah di desa Borongloe. Metode pengolahan data menggunakan software microsoft excell, Progress Ver 3.0 dan IP2Win untuk data geolistriknya serta digunakan data penunjang berupa data geologi daerah penelitian dan tabel nilai resistivitas. Titik pengukuran dalam penelitian ini terdiri dari dua titik sounding dengan masing-masing panjang bentangan 300 m dan 100 m. Hasil interpretasi menunjukkan bahwa jenis litologi batuan yang didapatkan terdiri dari lapisan lempung basah, lempung lanau basah lembek, lapisan tanah lanau pasiran, dan lapisan pasir. Sebaran akuifer air tanah yang diperoleh yaitu terdapat pada kedalaman 13 – 60 m dengan ketebalan ± 30 m dimana lapisan penyusunnya terdiri dari lapisan pasir dan lapisan lanau pasiran tersebar merata di setiap area penelitian.
Co-Authors Aisyah Aisyah Andi Devi Sri Anjani Ayu Annisa Amir Ayusari Wahyuni Ayusari Wahyuni Bergita Gela M Saka Fira Yurdanianti Fitriyanti Hafsan, Hafsan Hernawati Hernawati Hijriana Anwar Ihsan Ihsan Ihsan Muh Rusdin Muh. Khalifah Muh. Said L Novita Suherman Nur Safitri Nurhidayah Nurhidayah Nurjannah Nurjannah Nurul Namira Rani, Sefrilita Risqi Adikaning Siti Asyiqah Azizah Ilham Wahyuni Ayusari Yulia Kirana Lahsmin