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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 10 Documents
 1 
Search results for , issue "Vol 7 No 1 (2020): Juni" : 10 Documents clear
PERBANDINGAN SISTEM KENDALI SUHU INKUBATOR BAYI DENGAN METODE ZIEGLER-NICHOLS DAN METODE TUNING COHENG-COON Zulfaniar, Zulfaniar; Aulia, Nur
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.v7i1.13898

Abstract

In the world of helath, especially in the handling of newborns, an incubator is one of the right instruments to evercome the problems in handling newborns, newborns cannot produce body heat naturally. Which makes the stability of the body of a newborn is disrupted. So one of the important parameters to be controlled in this probem is the incubator room temperature conditions. The baby incubator is used to get the effect of heat on the baby body. The system that has been used in the incubator to date is still simple, with the aim of using a control system ini making comparisons of 2 methodes is the tuning coheng-coon method and the zegler Nichols method. Obtained respectively the values of Pi, Ki and Kd in the tuning coheng-coon method are 157, 48 and 3.27 and the Ziegler Nichols method respectively the Pi, Ki and Kd constant are 90, 50 and 0 with the resultang constant values capable of of producing a very small error state value of more than 1% at each set point that uses the tuning coheng-coon method so that the method has the advantage of a faster response. 
ANALISIS PERKEMBANGAN PASIEN COVID-19 MENGGUNAKAN SEGMENTASI CITRA RONTGEN TORAKS Sumarti, Heni
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.v7i1.13858

Abstract

Chest X-ray segmentation using the contour active method has been widely carried out and produces additional information for data analysis. This information can be used to determine the development of COVID-19 patients while in the hospital. The method in this study was divided into three, first taking X-ray images of patients COVID-19, second image segmentation using the active contour method then calculating area segmentation, and third calculating the deviation area in image segmentation then analyzed. The results showed that while patient in the hospital for 1-8 days 89% of patients had  50% decrease area clean lung, whereas only 11% of patients increased clean lung repair by about 20 - 31%. Patients who have improved this condition were hospitalized in a fairly severe condition and treated for 8 days. In general, days 1-8 patients determine at the hospital is when patients get worse showed by an decrease clean lung arean more than 50%, while days 8-14 is when the patient gets better or dies.
MODEL NON LINEAR KEJADIAN CURAH HUJAN EKSTRIM DI KOTA PALU MENGGUNAKAN PROGRAM JAVA Nurrahmi, Sitti; Farhamsa, Dedy; Iqbal, Iqbal
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.v7i1.14138

Abstract

Weather and climate are the main factors for influence on various activities of life. The increasing of human activity has made the change in components biophisical environment, which are major contributors about climate change. The most important of the process of climate change is the emergence of the extreme, that one example is, extreme rainfall, that the rainfall have more than 50 mm intensity / day. To know characteristic of climate change occurring, needed a model who represented data rainfall in various meteorology station. Based on it, author make a modeling the extreme rainfall in Palu city using Java programming. The results of the extreme rainfall predictions 10 years using software models and Java programming, in Palu city with using fourier series function order 5 predicted the extreme rainfall will likely increase every year with the highest event are  2 times / years. The prediction was featuring the precisely  value with the real data. So, we can conclude that the extreme rainfall model tends to be accurate and can be used to predict the extreme rainfall in Palu city and in other cities.
PENGARUH KOMPOSISI DAN UKURAN PARTIKEL TERHADAP KUALITAS BRIKET KULIT DURIAN DAN TEMPURUNG KELAPA Ashar, Muh.; Sahara, Sahara; Hernawati, Hernawati
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.v7i1.13964

Abstract

Research has been carried out on the utilization of durian rind and coconut shell waste by turning it into bio briquette. This study aims to determine the amount of heat, water content and duration of combustion in order to obtain the best quality. Samples were made with the composition of durian rind, coconut shell, and tapioca flour as an adhesive. Each sample was carbonized with a combustion drum and furnished at a temperature of 2500C, then grinding, sifting, and molding were carried out. The composition variations used are (20:80)%, (40:60)%, (60:40)%, and (80:20)% with particle sizes of 100 mesh and 170 mesh, the adhesive mass used is 3 gr. The results of the study, testing the calorific value using the bomb calorimeter obtained the best quality in the composition (80:20)% with a size of 100 mesh of 6482,76 cal/gr, the results of testing the moisture content using an 1050C oven obtained the best quality in the composition (80:20)% with a 100 mesh size of 6,77% and the longest burning test with the longest burning duration in composition (20:80)% with a 170 mesh size of 211,8 minutes/gr.
PENGGUNAAN KONTROL PID DENGAN BERBAGAI METODE UNTUK ANALISIS PENGATURAN KECEPATAN MOTOR DC Irhas, Muhammad; Iftitah, Iftitah; Azizah Ilham, Siti Asyiqah
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.v7i1.13846

Abstract

DC motor is a motor tha is widely applied to industrial and household equipment because of the level of flexibility and fairly easy operation. But in terms of speedDC motrs have the disadvantage that the speed is not constant along with the addition of the load so to overcome this problem a controller is needed in order to obtain a constant speed in accordance with the desired set poit. PID control is a control that serves to minimize the error rate of a plant. This control consists of Controller parameters P, I, D where the value of this parameter determines the level of response of a control to the plant. So it is necessary to engineer the tuning parameters with various methods so that the value of a parameter is in accordance with the palnt. Based on the description above, the purpose of this study is to review various tuning methods in response to the response of a DC motor.  
PERBANDINGAN LAJU KOROSI PAKU BETON PADA MEDIUM AIR PDAM DAN AIR LIMBAH AC (AIR CONDICIONER) Tajudin, Suaib; Rahmaniah, Rahmaniah; Ihsan, Ihsan
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.v7i1.13980

Abstract

The purpose of this study was to compare the corrosion rate of concrete nails with the medium of PDAM water and AC wastewater. The method used is the weight loss method. Immersion of the sample is carried out for 30 days and measurements are carried out and corrosion rate analysis is carried out every 10 days. Nail corrosion rate with PDAM water medium was obtained at 4.06 × 10-7 mm / year, while the corrosion rate of nails with AC wastewater medium based on variations in PK size and temperature size regulation on each AC obtained the largest corrosion rate on AC PK 1 ½ with a temperature of 18oC 4 × 10-7 mm / year, a temperature of 190C 2.66 × 10-7 mm / year, 20oC, 5.77 × 10-7 mm / year and a temperature of 21oC, 5.88 × 10-7 mm / year. AC PK 2 with a temperature of 19oC, 5.26 × 10-7 mm / year, a temperature of 20oC, 7.97 × 10-7 mm / year, a temperature of 21oC, 4.95 × 10-7 mm / year and a temperature of 22oC 3.49 × 10 -7 mm / year. For AC PK 1 with a temperature of 20oC, 3.77 × 10-7 mm / year, a temperature of 21oC 5.74 × 10-7 mm / year, a temperature of 22 oC, 8.11 × 10-7 mm / year and a temperature of 23oC 8.96 × 10-7 mm / year.
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.  
ANALISIS PENGARUH ANGIN TERHADAP POLA ARUS PERMUKAAN DAN DISTRIBUSI SALINITAS DI MUARA SUNGAI PALU Meidji, Icha Untari; Mudin, Yutdam; Jayadi, Harsano; Botjing, Muslimin U
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.v7i1.13219

Abstract

The pattern of surface currents and salinity distribution at the mouth of the Palu River by using the 2D coherens model to show that the presence of wind factors influences the velocity and direction of the tidal and non-tidal surface flow patterns at the mouth of the Palu River. Using primary and secondary data, the results show that non-tidal currents are more dominant with the direction of spread from the North to the East to the West then turn to the South, with a velocity of 2.57 m/s. The pattern of salinity distribution with tidal and non-tidal flow generators has a different model. Still, it has the same direction, namely the flow from North East to West direction, which is deflected to the South adjacent to the mouth of the Palu River estuary. 
PENGUJIAN PAPARAN RADIASI SINAR-X DI UNIT RADIOLOGI RSUD KOTA MAKASSAR Yuliamdani, Riska; Sahara, Sahara; Fuadi, Nurul
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.v7i1.13867

Abstract

The research has been conducted to determine the effect of exposure to a dose of radiation to the distance and time from the source of radiation and to determine how large exposure to radiation scattering which is received by a worker or operator in the space radiology Hospital Makassar. This research uses X-ray aircraft, Surveymeter, meter, and phantom. In measurements carried out two stages namely stage first measure exposure dose of radiation to the distance the results of the research that is done on testing the safety of exposure to radiation rays -X in units of radiology Hospital cities of Makassar, then obtained a conclusion as follows based on parameters of distance and time from the source of radiation effect large against  dose of radiation exposure. A more far distance from the source of radiation the dose that is received by increasingly smaller. While the influence of the amount of time of the exposure beam of radiation that is increasingly long time irradiation then getting big too doses of radiation are obtained. Value exposure to radiation scattering which is received by the worker radiation chamber radiology Hospital of Makassar is the dose of radiation that is received by workers with long time use of radiation were the biggest received by operators XIII which amounted to 0.1769 mSv/h, while the value of the dose which is the smallest  received by the operator XI of 0.0593 mSv/h and the average dose received by the operator is 0.1570mSv/h.
STUDI ANALISIS KOEFISIEN ABSORBSI PAPAN AKUSTIK PADA KETEBALAN BERVARIASI BERBAHAN DASAR LIMBAH KULIT JAGUNG DAN SABUT KELAPA (SOLUSI ALTERNATIF RAMAH LINGKUNGAN) Said L, Muh.; Nurmin, Nurmin; 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.v7i1.13484

Abstract

This study aims to detemine the effect of thickness on the absorption coefficient of acoustic boards from corn waste and coconut fiber with polyester resin adhesive. The procedure used is used in the research carried out by making acoustic boards with two types of samples, which are fine chopped materials and materials that have been roughly cut with a thickness of 0.7 cm, 1.0 cm and 1.5 cm and measure the coefficient absorption of the thickness of the acoustic material board. The frequency value used is 200 Hz, 250 Hz, 500Hz, 1000 Hz, 2000 Hz and also 4000 Hz. Based on the results of research conducted, it is found that the absorption coefficient value of straight-line coefficient, where the thicker a material, the smaller the coefficient of absorption. Sound absorption coefficient is good, namely at all thicknesses with a frequency of 200 Hz, 250 Hz and 500 Hz both from fine counts and rough counts. This shows that acoustic boards made of corn husk and coconut fiber can be used as sound absorbers because they have been included in the requirements of the ISO 11654 standard. 

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