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All Journal Teknosains: Media Informasi Sains dan Teknologi Techno: Jurnal Penelitian SITEKIN: Jurnal Sains, Teknologi dan Industri JOURNAL ONLINE OF PHYSICS JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Jurnal Fisika dan Terapannya
Sahara Sahara
UIN Alauddin Makassar
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Physics Other

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IDENTIFIKASI LITOLOGI PADA DAERAH PANAS BUMI MENGGUNAKAN METODE RESISTIVITY KONFIGURASI WENNER-SCHLUMBERGER DI DESA GALUNG KABUPATEN BARRU Ilyas, Mohamad; Sahara, Sahara; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 1 (2017): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (564.756 KB) | DOI: 10.24252/jft.v4i1.10259

Abstract

Sub-surface analysis has been conducted to find out the lithology which includes the structure, the type of rock and the thickness of the geothermal layer of geothermal resources by using the geoelectric configuration method of Wenner-Schlumberger in Kalompie Hamlet, Galung Village, Barru sub-District, Barru District. The working principle of the geoelectric method is performed by injecting an electric current to the ground surface through a pair of current electrodes and measuring the potential difference with another pair of electrodes. The research was conducted in three trajectories with a trajectory length of 105 m and a spacing of 7 m electrodes. The result of the data interpretation was obtained by three materials that is sandy soil with resistivity value 0,095 - 4,05 Ωm have thickness 1 - 12 m, tuffed sandstone with resistivity value 4,05 - 39,7 Ωm having thickness 10 - 14 m, with a resistivity value of 39.7 - 547 Ωm with a thickness of 5 - 15 m, this rock is suspected as a rock cover on Kalompie hot water source area because it has a difficult nature to pass water (impermeabel). The geological structures of fault, anticline and syncline are not found in this research because the measurement path does not cut or pass through the path of geological structure.
UJI KUALITAS BIOBRIKET CAMPURAN TEMPURUNG KELAPA, TONGKOL JAGUNG, DAN SEKAM PADI DENGAN TEPUNG SAGU SEBAGAI PERAKAT Muhlis, Ahmad Marzuki; Sahara, Sahara; Fuadi, Nurul
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (640.953 KB) | DOI: 10.24252/jft.v6i1.12736

Abstract

Research has been carried out with the title of the biobriquette quality mixture of coconut shell, corn cobs, and rice husk with sago flour as adhesive. The purpose of this study was to determine the quality of the bio-briquettes with a mixture of coconut shells, corn cobs and rice husks with sago flour as an adhesive. In this study the raw material used was coconut shell with the process of drying at temperatures of 3500C, corn cobs with a temperature of 1500C and rice husks with a temperature of 1200C with the composition used was 60%: 20%: 20%, 60%: 25%: 15%, 60%: 30%: 10% and 60%: 35%: 5% then sieving particle size for all 40 mesh samples, mixing using 3 grams of sago flour as bio-briquette adhesive, then bio-briquette printing and drying is done. Furthermore testing of compressive strength, moisture content, ash content, calorific value and combustion time with the results of compressive strength testing using the tool. TA.XTPlus Texture Analyzer the best characteristics obtained in the composition 60%: 35%: 5% with a value of 9.82 kg /cm2, and the best characteristic moisture content was tested in the composition of 60%: 30%: 10% with a value of 4.59%. The quality produced from the biobriquette mixture of coconut shell, corn cobs, and rice husk with sago flour as adhesive can be categorized as good. This is seen from the testing of water content, ash content and calorific value that meets the Indonesian national standard and the burning time of 152.18 minutes, except for compressive strength testing that does not equal to the quality standards of Indonesia.
IDENTIFIKASI LAPISAN RAWAN LONGSOR MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI WENNER SCHLUMBERGERDI DESA PANA KECAMATAN ALLA KABUPATEN ENREKANG Taufik, Muh.; Sahara, Sahara; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 2 (2017): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.815 KB) | DOI: 10.24252/jft.v4i2.10255

Abstract

Has conducted research on landslide-prone layer in Pana village Alla subdistrict of Enrekang regency. This research aims to determine the subsurface structure in Pana village Alla subdistrict of Enrekang regency and to determine the potential landslides based of rock layers in Pana village Alla subdistrict of Enrekang regency. In this research measurements were performed using geolistrik resistivity method configuration of Wenner-Schlumberger. Measurements were taken at 5 tracks with the lenght of each track is 75 m with each electrode spacing is 5 m for each track. The result of data processing showed that 5 tracks composed of a layer of soil with plenty of water accumulation, with resistivity value of 0,169 Ωm-13,7 Ωm, a layer of shale in weather conditions with resistivity value of 4,16 Ωm-41,3 Ωm and a layer of shale in fresh condition with resistivity value of 41,3 Ωm-1141 Ωm. Futhermore, the track is concidered prone to landslide are track 3, track 4 and track 5. These predictions are because on the third track suspected slip surface with resistivity value of 29,7 Ωm-37,9 Ωm.
PENGUJIAN KERAPATAN DAN KADAR AIR SERTA PENGUJIAN KOEFISIEN ABSORBSI UNTUK MENGETAHUI PENGARUH VARIASI KETEBALAN DAN FREKUENSI TERHADAP PAPAN AKUSTIK BERBAHAN DASAR DAUN PANDAN DURI (PANDANUS TECTORIUS) Hasan, Hasniati; Sahara, Sahara; Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 6 No 2 (2019): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (554.102 KB) | DOI: 10.24252/jft.v6i2.11707

Abstract

Penelitian ini bertujuan untuk mempelajari sifat-sifat fisis yang terkait dengan hasil dan kadar air papan akustik berbahan dasar daun pandan duri serta mempelajari variasi ketebalan dan frekuensi terhadap koefisien absorbsi bunyi papan akustik berbahan dasar daun pandan duri. Metode yang digunakan pada penelitian ini yaitu membuat papan akustik dengan dua jenis sampel yaitu sampel tumbuk dan sampel blender dengan ketebalan 0,7 cm, 1,0 cm, 1,2 cm dan 1,5 cm, serta mengukur nilai kerapatan, kadar air dan koefisien penyerapan dengan variasi ketebalan dan frekuensi. Nilai besar yang digunakan adalah 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz dan 4000 Hz. Berdasarkan hasil penelitian yang diperoleh nilai koefisien absorbsi berbanding terbalik dengan ketebalan, di mana semakin tebal suatu bahan maka semakin kecil koefisien absorbsi.Kata Kunci: Daun Pandan Duri, Akustik, Koefisien Absorbsi, Frekuensi, Kerapatan, Kadar Air, Resin poliester
PEMBUATAN DAN KARAKTERISASI KOMPOSIT LiBOB/MgCl2 DENGAN METODE SOLID STATE REACTION Darwis, Arwin; Iswadi, Iswadi; Sahara, Sahara
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (918.32 KB) | DOI: 10.24252/jft.v6i1.12718

Abstract

The manufacture and characterization of the lithium bus Composite (oxalate) borate with the addition of magnesium chloride (LiBOB/MgCl2). Electrolytes as a media transfer ion battery, plays an important role in the charge-discharge process of lithium ion batteries. The basic ingredients used in the study are lithium hydroxide (LIOH), Borid acid (H3BO3), Our acid dehydrate (H2C2O4 • 2H2O) and magnesium chloride hexahydrate (MgCl2 • 6H2O). The method used in this research is solid state reaction or known as solid-solid method. Based on the results of the XRD characterization, shows the peaks of LiBOB experiencing a shift after being added with 2.5%; 5% and 7.5% MgCl2 • 6H2O, in addition it also raises new peaks of magnesium. While the spread of the material is blown the sample appears evenly with the SEM-EDX test, however there are some elements that are experiencing clotting. And the FTIR test showed a change in the frequency of each mass increase of MgCl2 • 6H2O, but did not cause peak changes in each sample. In the EIS test results, obtaining a low electrical conductivity value, due to agglomeration of the material after the addition of elemental magnesium that is ionic. Thus also causes the diffusion of ions to lower.
PERBANDINGAN EFISIENSI DYE SENSITISIZED SOLAR CELL (DSSC) DARI EKSTRAK DAUN PACAR AIR, EKSTRAK BUNGA PACAR AIR MERAH DAN UNGU (IMPATIENS BALSAMINA LINN) SEBAGAI DYE SENSITIZER Alimuddin, Arni; Iswadi, Iswadi; Sahara, Sahara
JFT : Jurnal Fisika dan Terapannya Vol 3 (2016): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v3i0.16829

Abstract

Research on Comparison Of Efficiency Dye Sensitized Solar Cell (Dssc) Of Henna Leaf Extract Water, Water Henna Flower Red And Purple (Impatiens Balsamina Linn) as a Dye Sensitizer in order to determine how much comparative efficiency of dye sensitisized solar cell (DSSC ) of water henna leaf extract, flower extract water henna red and purple as a dye sensitizer. The method used in this research is the method of Doctor Blade. Based on the results of measurements of I-V by using a source of light, the efficiency gained from henna leaf extract 0.008473333% water by absorption spectrum wavelengths are in the range of 245- 660.50 nm and an absorbance of 0.036. For efficient water henna red flowers of 0.007466667% of this extract is the wavelength range of 242.50 - 312 500 nm and absorbance of 4573, while for the water purple flowers girlfriend 0.004833333% efficiency results obtained in the wavelength range 238.50 - 350.50 nm and absorbance 4,617 , Henna leaf extract water as a dye sensitizer on sensitisized dye solar cell (DSSC) have the highest efficiency.
UJI KUAT TEKAN DAN DAYA SERAP AIR PADA BATAKO DENGAN PENAMBAHAN LIMBAH TULANG IKAN Sahara, Sahara
JFT : Jurnal Fisika dan Terapannya Vol 6 No 2 (2019): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.788 KB) | DOI: 10.24252/jft.v6i2.11693

Abstract

Batako adalah material penyusun dinding rumah yang biasa menjadi pengganti batu bata. Material penyusun batako adalah semen dan pasir. Dalam penelitian ini dibuat batako dengan penambahan serbuk tulang ikan dengan komposisi berbeda. Tujuan dari penelitian ini adalah untuk mengetahui bagaimana pengaruh penambahan serbuk tulang ikan terhadap kuat tekan dan daya serap air pada batako. Untuk mendapatkan hasil penelitian digunakan beberapa tahap metode penelitian antara lain: Pembuatan sampel uji batako, Pengujian kuat tekan dan daya serap air. Sampel uji terdiri dari 7 sampel dengan komposisi campuran B1 = 5% Tulang Ikan: 45 % Semen, B2 = 10 % Tulang Ikan : 40 % Semen, B3 = 15% Tulang Ikan : 35 % Semen, B4 = 20% Tulang Ikan : 30 % Semen, B5 = 25% Tulang Ikan : 25 % Semen, B6 = 30% Tulang Ikan: 20 % Semen, B7 = 35% Tulang Ikan : 15 % Semen. Komposisi air dan pasir dibuat konstan dengan campuran Pasir 40% : Air 10%. Kemudian dilanjutkan dengan pengujian kuat tekan dan daya serap air tiap sampel. Hasil penelitian menunjukkan bahwa penambahan 5% dan 10% tulang ikan ke dalam agregat campuran batako berpengaruh pada peningkatan nilai kuat tekan. Sebaliknya penambahan diatas 25 % mengakibatkan penurunan nilai kuat tekan batako. Jika dibandingkan dengan standar SNI, sampel B1, B2 dan B4 memenuhi standar Nasional Indonesia (SNI) beton kelas III dan IV. Untuk Daya Serap air pada semua sampel rata-rata 10% dan memenuhi standar Nasional (SNI) penyerapan air yang nilainya maksimal 25%.
PENGUKURAN DAN ANALISIS DOSIS PROTEKSI RADIASI SINAR-X DI UNIT RADIOLOGI RS. IBNU SINA YW-UMI Rahmayani, Rai; Sahara, Sahara; Zelviani, Sri
JFT : Jurnal Fisika dan Terapannya Vol 7 No 1 (2020): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i1.14118

Abstract

This study aims to determine the dose of radiation in a large room with measurements from various directions, knowing the great wall by measuring the absorption of a scattering outdoors doses, and determine the radiation dose received by radiation workers in radiology installations. This study uses Surveymeter, the meter, the best ruler X-rays, and phantom. In measurements carried out three phases: the first measure exposure dose in a room with a distance of 1 m and 2 m with a voltage of 50 kV, 55 kV and 60 kV, the second stage taking the raw data of radiation received by workers of the head of the installation and the third stage knowing absorption wall by measuring the scattering dose outdoors. Based on the research that has been done, it can be concluded that the largest radiation dose is on the right side of the tube either with an object that is 33 µSv/h or without an object that is 33.6 µSv/h at a distance of 1 m and a voltage of 60 kV, but the value at both the other positions, namely the left and front side of the plane do not have such a large difference that it can be stated that the values obtained at the three positions are almost the same at the same voltage and distance, the largest dose received by operator IV is 0.215 mSv/h and the average dose the average received by workers is 0.2 mSv/h in accordance with Regulation of BAPETEN No.4 of 2013, and the ability of the walls to absorb outdoor radiation doses is very good as seen from the results of undetectable radiation measurements because all are absorbed by the wall.  
PENGARUH KEHALUSAN SEMEN TERHADAP KUAT TEKAN MORTAR Afni, Nur; Sahara, Sahara; Hernawati, Hernawati
JFT : Jurnal Fisika dan Terapannya Vol 2 (2015): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v2i0.16894

Abstract

This study aims to determine the effect of fineness to compressive strength of cement mortar. Mechanical parameters measured are fineness and compressive strength. From these test results, lead to the conclusion that the overall mechanical properties of the cement and mortar for all treatments meet the Indonesian National Standard (SNI) in 2004, the highest level of refinement that is 410.8 kg/m2, while the lowest is 387 kg/m2. For the compressive strength at age 3 days produces the highest value is 181 kg/m2, while the lowest is 143 kg/m2, at the age of 7 days resulted in the highest value is 242 kg/m2, while the lowest is 204 kg/m2, at the age of 28 days produces the highest value is 350 kg/m2, while the lowest is 265 kg/m2. Concluding that the more finely granular cement eat the higher the compress strength.
ANALISIS DOSIS PAPARAN RADIASI DI UNIT RADIOLOGI RS. BHAYANGKARA MAKASSAR Hasmawati, Hasmawati; Sahara, Sahara; Hernawati, Hernawati
JFT : Jurnal Fisika dan Terapannya Vol 3 (2016): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v3i1.15722

Abstract

This study aims to measure the wall thickness of material radiation shield by using calipers, stage of measuring the radiation dose produced the best x-rays in different directions by using Surveymeter at the distance measuring point on the wall with a height of 10 cm, 1m, 2m, the third stage is measuring the radiation dose x-rays in the vertical and horizontal measurement with the object and without an object with a fixed voltage 75 Kv with distance measurements from a source to a device 1 meter and 2 meters in space and outside space. And the last stage takes raw radiation doses received by workers of the head of the installation space radiology Bhayangkara Makassar. Based on the research results in the first phase of the thick walls of the radiology that is 15 cm+2 mm (Pb) each side and wooden doors 5 cm+2 mm (Pb) and glass Pb 2 cm+2 mm (Pb), rate of radiation exposure resulting air x-ray in many directions obtained radiation is greatest there is in the direction of the left side air that is 3600 μSv/h, the dose rate on the measurement of vertical and horizontal with a specified distance of radiation of the total of the door operator vertical measurement that is equal to 3400 μSv/h, the dose received by the operator of the largest radiation received by the third receiver that is equal to 0.1599 μSv / h and the measurement results outside the room is 0.00 μSv / h was not detected while the radiation received by the receiver the first small at 0.1546 μSv/h and the mean dose average received by the operator of 0.1 μSv/h this is in accordance with the SNI allowed for workers is 50 mSv/ h in the first year. Keywords : radiation dose , radiation workers , radiation shield
Co-Authors A, Indrawati.A Abd. Munir HB Abd. Rasyid Syamsuri Abu Ammar Ahmad Zarkasi Alimuddin, Arni Amaliah, Fia Amirin Kusmiran Andi Syam Rizal Anita Purnamasari Apriliah, Risky Ashar, Muh. Askar Ayu Hardianti Mahmud Ayusari Wahyuni Ayusari Wahyuni Basmanto Basmanto Darwis, Arwin Dya Ayu Rahma Niar Rajab Fadhila, Rahayu Yuliastri Fajar Fajar Fitria Jasman Fitriani Fitriani Hasan, Hasniati Herianti, Herianti Hernawati Hernawati Hernawati Hernawati Hernita Sapitriani Hery Widijanto Hidayat, Serli Hatul I Gusti Bagus Wiksuana Ihsan Ihsan Ihsan Ihsan Ilham Maulana Ilyas, Mohamad Isradianti, Dwi Febri Jamhari Jamhari Janna, Miftahul Jasdar Agus jumardin jumardin Kasturi Ramadani Mentari, Eka Pratiwi Muh Sundi Safi’i Ahmad Muh. Said L Muh. Taufik Muhlis, Ahmad Marzuki Nur Afni Nurfadhilah jusman Nurhalimah Nurhalimah Nurul Fuadi Patunrengi, Iswadi Ibrahim Prasepvianto Estu Broto Prihardjo Sanyoto RAHMANIAH RAHMANIAH Rahmayani, Rai Rani, Sefrilita Risqi Adikaning Rani Safitri, Aan Saiyidah, Hijrah Mustajabah Sophyan, Nur Fadhilah Syamsur, Nadia Nurafiah Topyana Topyana Wahyuni, Ayusari Yoga Yuniadi Yuliamdani, Riska Yuliana Nengsih Zelviani, Sri Zulfaniar