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Andi Syam Rizal
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INDONESIA
Jurnal Fisika dan Terapannya
Published by Universitas Islam Negeri Alauddin Makassar
ISSN : 23021497     EISSN : 27152774     DOI : -
Core Subject : Science,
Physics
Jurnal Fisika dan Terapannya (JFT) adalah jurnal fisika yang diterbitkan oleh Jurusan Fisika, Fakultas Sains dan Teknologi, Universitas Islam Negeri Alauddin, Makassar. Jurnal ini diterbitkan dua kali setahun pada bulan Juni dan Desember. Jurnal ini mencakup artikel penelitian dalam semua aspek fisika dan terapannya. Jurnal ini pertama kali diterbitkan pada bulan Desember 2014 dan secara online di tahun 2019. Artikel hasil penelitian dalam jurnal ini berkaitan dengan fisika yang meliputi adalah fisika teori, fisika material, geofisika, fisika kesehatan, fisika instrumentasi, fisika komputasi, dan astrofisika.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 191 Documents
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Analisis Suseptibilitas Magnetik Tanah Perkebunan Apel di Kecamatan Pujon Kabupaten Malang: Indonesia Rikardus Feribertus Nikat; Ninik Munfarikha
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.42539

Abstract

This research aims to analyze the magnetic susceptibility value of apple plantation soil to determine the magnetic value as a representation of the heavy metal content on the soil surface due to pesticide residues. This research was carried out by taking samples at nine predetermined points. Each sample was taken from the ground surface at varying depths of 10 cm, 20 cm, and 30 cm. The total number of samples was as large as samples and tested for magnetic susceptibility values ​​at the central laboratory of the State University of Malang. The average value of low-frequency magnetic susceptibility per mass χ_LF is 673.642 x 10-8m^3/kg, and the average value of high-frequency magnetic susceptibility per mass χ_HF is 649.0473 x 10-8 m^3/kg. The average frequency-dependent magnetic susceptibility value χ_FD per mass is 2.04%. The surface soil of plantations contains high concentrations of ferrimagnetic minerals in the form of magnetite and maghemite with grain properties in the form of multi-domain (MD) and superparamagnetic (SP).
Analisis Momen Tensor dan Mekanisme Fokus Gempa di Sumatera Barat Menggunakan Metode Inversi Waveform Putri, Zakiah Putri; Syafriani; Akmam; Letmi Dwiridal
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.42926

Abstract

Analysis of the tensor moment and focal mechanism of an earthquake aims to determine the value of the tensor moment that represents the direction of the force that causes the earthquake and the focal mechanism that describes the characteristics of the fault motion that causes the earthquake. Analysis of the tensor moment and focal mechanism is carried out using the waveform inversion method. The waveform inversion method is an inversion method that utilizes the P-wave arrival time and is estimated with a Green's function involving three seismogram components. The data used in this study are ten earthquake data in the West Sumatra region in 2007-2022 whose earthquake sources are in the Sumatra fault zone with earthquake strength ≥4.9 Magnitude. The results of this study obtained a range of tensor moment values, namely M11 = -2.595 to -4.555, M22 = 1.743 to 4.476, M33 = 0.853 to 0.079, M12 = 6.258 to -4.814, M31 = 1.241 to 0.719, M32 = 0.530 to -1.436, and the results of the focus mechanism obtained are strike-slip patterns.
Analisis Kondisi Atmosfer Saat Kejadian Hujan Es (Studi Kasus: Kejadian Hujan Es Tanggal 29 November 2023 di Kabupaten Timor Tengah Selatan) Maulidianto; Tempo, Neil Farel Rindra; Yosafat Donni Haryanto
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.45152

Abstract

Hail is an extreme weather phenomenon that rarely occurs in Indonesia. On November 26, 2023, there was heavy rain accompanied by hail in the Kapan area, South Central Timor Regency, East Nusa Tenggara at around 13:30 WITA. Further research on extreme events is needed to anticipate future extreme weather events. This study aims to analyze atmospheric conditions when hail occurs in the Kapan area on November 26, 2023. Research methods include analysis of field observation data, ECMWF ERA5 numerical modeling data, and Himawari-9 weather satellite image data. Based on observational data, hail occurs under unstable atmospheric conditions, such as a significant decrease in surface temperature, high humidity, and a significant decrease in atmospheric pressure before the event. Analysis of the vertical profile of the atmosphere based on model data showed that divergence, vertical velocity and relative humidity favored the formation of convective clouds. Satellite images showed that the temperature at the top of the cumulonimbus clouds during the ice storm was very low (-75.8°C). In addition, convective cloud cover (CCO) analysis confirmed the presence of cumulonimbus clouds covering the Kapan region during the hail period. All three methods can well describe the atmospheric conditions during hail events, these results are expected to provide insight into the atmospheric factors that contribute to the occurrence of hail in tropical regions such as Indonesia and can be used to better understand and mitigate the negative impacts of these extreme weather events.
Ekstraksi Frekuensi dari Bunyi Alqurans dengan Metode Discrete Fourier Transform: Studi Kasus Bunyi QS. Al-Fatihah Kusmiran, Amirin; Andi Syam Rizal; Sahara; Ahmad Zarkasi; Kasturi Ramadani
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.45386

Abstract

The Quran is a miracle received by the Prophet Muhammad. Alquran can use to reduce anxiety in patients with acute coronary syndrome, hemodialysis, schizophrenia, etc., when the sound retardation of this Qur'an, especially QS. Al-Fatihah. The physical properties of waves can be analyzed using the discrete Fourier transform method for frequency extraction. This method is scripted using the Python programming language. The results show that frequency in Qs. Al-Fatihah/1:1-7 are random in range 150 Hz – 800 Hz.Thus, the frequencies of the Quran, especially QS Al-Fatihah, are uneven waves that can cause harmonic vibrations against brain waves.
Rancang Bangun Insinerator Pengolahan Sampah dengan Penerapan Teknologi Termal yang Ramah Lingkungan Estu Broto, Prasepvianto; Fitriyanti; Amirin Kusmiran; Khaerul Ihsan
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.45734

Abstract

Concerns about environmental problems such as increasing the volume of waste which if not treated properly will affect environmental pollution which can damage soil fertility and also have an impact on human health. This study aims to make a waste processing incinerator with the application of thermal technology. Oil and water stoves are used as media for burning waste, the stove will burn the waste that has been put into the combustion chamber made of drums coated with clay. This clay coating aims to increase the temperature of the combustion chamber so that maximum combustion is obtained with minimal smoke. From the waste burning test, the temperature measurement results in the combustion chamber reached 751ºC. Carbon gas measured at the maximum temperature around the incinerator is 27 ppm. From the data obtained, it can be concluded that waste burning with an incinerator has been made to minimize air pollution so that it can be used for solutions in environmentally friendly waste processing.
Uji Kesesuaian Kinerja dan Analisis Reproduksibilitas Akurasi Tegangan Tabung Pesawat Sinar-X di Balai Pengamanan Alat Fasilitas Kesehatan Makassar Nur Isnaeni; Suci Khusnul Amelia; M. Ichzan; Jumardin, Jumardin; Sitti Nurrahmi; Jasdar Agus; Dwi Febri Isradianti; Khaerul Bariah
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.47855

Abstract

The X-ray beam collimation test, voltage accuracy test, reproducibility test, and fourth is the X-ray beam output test (Half Value Layer) on the Mobile X-ray aircraft. This testing aims to determine the standards that have been set. Tests that have been carried out on the illumination and the difference between the collimation field of the beam and the X-ray beam show that the results obtained have passed the test on an X-ray aircraft. Both tests are in accordance with established standards. Reproducibility testing is carried out by measuring the radiation output (mGy) at the same settings repeatedly. The data shows a corrected mean of 0.075 mGy with a standard deviation of 0.0034, indicating that the X-ray aircraft has good reproducibility in producing consistent radiation output. The mobile X-ray unit tested had sufficient accuracy and reproducibility that complied with established standards and demonstrated the reliability of the device in clinical practice. X-ray beam output testing was carried out and a corrected HVL value was obtained which was greater than the test pass value. The results obtained are in accordance with established standards.
Pemanfaatan Citra Satelit dan Data Geolistrik untuk Zonasi Daerah Rawan Longsor di Kecamatan Walenrang Barat Kabupaten Luwu Atfar R, Ranir; Azzahra, Silfa; Annur; Fitriani, Nita; Sari, Sartika; Nurfalaq, Aryadi
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.48112

Abstract

This research aims to identify areas prone to landslides and landslide slip areas in West Walenrang District, Luwu Regency. The method used to determine landslide-prone areas is the scoring and overlay method, while to identify landslide slip areas using the dipole dipole configuration geoelectric method with a measurement path length of 100 m. The data used in scoring and overlaying are land cover data obtained from Landsat 8 satellite imagery, rainfall data and slope slope data originating from DEMNas. The results of this research show that most of the West Walenrang District is an area with a very high level of landslide vulnerability. The distribution of landslide-prone areas in West Walenrang District is in the low category, namely in Lewandi Village and Ilan Batu Village. Areas of moderate vulnerability are spread across a small part in Lewandi Village, Lamasi Hulu Village, Pasang Village, Lempe Village, Ilan Batu Uru Village, and Ilan Batu Village. Areas with high vulnerability are Lempe Village and Pasang Village. Meanwhile, areas with a very high level of vulnerability are spread across most of West Walenrang District, including Lewandi Village, Lamasi Hulu Village, Pasang Village, Lempe Village, Ilan Batu Uru Village, and Ilan Batu Village. The landslide slip area is interpreted as basalt rock which has a resistivity of 2,925 Ohm - 18,585 Ohm.m with a slope of 25.47o at a depth of 5.13 m - 17 m. The resulting landslide potential is in the form of a rotational type landslide.
Pemodelan 2D Struktur Geologi Bawah Permukaan di Daerah Manifestasi Panas Bumi Buaran, Kabupaten Brebes, Berdasarkan Anomali Magnetik Safrilia, Putri; Muhardi; Perdhana, Radhitya
JFT : Jurnal Fisika dan Terapannya Vol 11 No 1 (2024): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i1.48120

Abstract

Buaran Village is one of the villages in Brebes Regency that has a geothermal manifestation. This research aims to observe the subsurface geological structure of the Buaran geothermal manifestation area and its surroundings based on the distribution of magnetic anomalies. The digitization process was conducted on the Majenang sheet magnetic anomaly map published by the Geological Survey Centre which has made daily corrections and International Geomagnetic Reference Field (IGRF) corrections. The 2D modeling was performed on the residual magnetic anomaly obtained from the subtraction of the total magnetic anomaly from the reduction to the pole with the regional magnetic anomaly from the upward continuation. The distribution of residual magnetic anomalies obtained is -323.6 nT to 504.2 nT. Low anomalies are distributed in the northeast-southeast with values of -323.6 nT to -22.7 nT, while high anomalies are distributed in the north-south with values of 166.9 nT to 504.2 nT. 2D modeling results show subsurface geological structures in the form of fault structures, anticline folds, and syncline folds. Geothermal manifestations in the Buaran area are formed by the intrusion of igneous rocks as heat sources, and fault structures as hydrothermal fluid pathways.
Temporal Analysis of Rainfall Characteristics in Response to Climate Change in the Special Region of Yogyakarta Province Mashuri, Imawan; Fadhli Aslama Afghani; Ofana Tri Wibowo
JFT : Jurnal Fisika dan Terapannya Vol 11 No 2 (2024): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i2.43707

Abstract

Climate change has resulted in uneven rainfall variations. The temporal analysis of rainfall in the Special Region of Yogyakarta Province was conducted through the calculation of monthly averages, seasonal averages, and annual trends using the Climate Data Operator (CDO) and Microsoft Excel application over 60 years from 1961 to 2020, utilizing ERA5 data. The time frame is divided into two periods: 1961-1990 and 1991-2020, aiming to observe rainfall characteristics such as changes, patterns, and trends that occurred during these intervals. The highest monthly average rainfall occurs in January for both periods, registering 378 mm for 1961-1990 and 370 mm for 1990-2020. In contrast, the lowest monthly average occurs in August, with values of 51 mm for 1961-1990 and 38 mm for 1991-2020. The highest seasonal average rainfall occurs during the DJF period, with values of 945 mm for 1961-1990 and 1022 mm for 1991-2020. However, the lowest seasonal average occurs during the JJA period, with values of 228 mm for 1961-1990 and 191 mm for 1991-2020. The rainfall trend shows an increase for the first period (1961-1990), whereas decreases in the second period (1991-2020), including wet seasons, dry seasons, and annual. The result can be associated with climate change, where there are occurrences of extremely wet and extremely dry seasons. Overall, the Special Region of Yogyakarta province experienced continuous yearly rainfall from 1961 to 2020.
Sintesis Hidroksiapatit Berbahan Tulang Ikan Layar (Istiophorus Platypterus) Menggunakan Metode Presipitasi Al-Qarny, Uwais; Rauf, Nurlaela
JFT : Jurnal Fisika dan Terapannya Vol 11 No 2 (2024): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v11i2.50008

Abstract

Sailfish bone is one of the marine biological wastes that has potential as a source of hydroxyapatite for biomedical applications. This study aims to synthesize hydroxyapatite made from sailfish bone through precipitation method with the effect of variation in calcium precursor mass and phosphate precursor concentration. Sailfish bones were calcined at 900ºC for 3 hours, then reacted with (NH4)2HPO4. The solution was adjusted to pH 8 using NaOH, precipitated for 24 hours at room temperature to produce a homogeneous precipitate, washed with aquades, and filtered. The precipitate was then dried at 100ºC for 2 hours to produce hydroxyapatite. FTIR characterization showed the presence of PO43-, OH-, and CO32- groups in all three samples. Sample C has higher absorption intensity of PO43- and OH- groups than the other two samples. The higher absorption intensity indicates more content of PO43- and OH- groups. XRD analysis showed that the three samples had dominant hydroxyapatite phase. In addition to the hydroxyapatite phase, there is also A-type carbonate apatite phase and B-type carbonate apatite phase. Sample C has the largest average crystal size, which is 28.94 nm.

Page 17 of 20 | Total Record : 191

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