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Progressive Physics Journal
Published by Universitas Mulawarman
ISSN : -     EISSN : 27227707     DOI : https://doi.org/10.30872/ppj.v3i2
Core Subject : Health, Science, Engineering,
Astronomy Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Health Professions Materials Science & Nanotechnology Physics
Progressive Physics Journal adalah kumpulan hasil penelitian berbagai cabang ilmu Fisika, seperti Fisika Teori, Fisika Material, Fisika Elektronika & Instrumentasi, Fisika Medik, Fisika Komputasi dan Pemodelan, Geofisika, Oseanografi, dan cabang ilmu Fisika lainnya yang masih relevan. Progressive Physics Journal terbit sebanyak 2 kali dalam setahun. Ilmu Fisika perlu dikomunikasikan kepada masyarakat untuk diambil manfaatnya baik secara langsung maupun tidak langsung dan untuk perkembangan ilmu Fisika itu sendiri. Progressive Physics Jornal, sebagaimana nama tersebut diberikan, dimaksudkan tidak hanya untuk mengkomunikasikan ilmu Fisika yang bersifat atraktif dan inovatif, tapi juga progresif.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol 2 No 1 (2021): Progressive Physics Journal" : 5 Documents clear
Menentukan Intensitas Radiasi UV yang Diterima Pekerja Pengelasan dengan Titik Area Mata, Siku, dan Betis Muliana Dai; Kadek Subagiada; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 2 No 1 (2021): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (885.122 KB) | DOI: 10.30872/ppj.v2i1.736

Abstract

The aim of this study is to measure the UV intensity received by the welders during working time and compare the results of measured radiation intensity which is obtained with the NAB in Regulation of the Minister of Manpower No. 05 of 2018 that is 0,0008 mW/cm2. The reason for using this NAB is for compare value while welding process with the value were allowed from Regulation of the Minister of Manpower. This study has been done in some workshops using the UV Meter and focused on the welders’ eye, elbow and calf area with 10 repetitions in each area. The results for eye area were 0.0749 mW/cm2, for elbow area were 0.0843 mW/cm2and for calf area were 0.0934 mW/cm2and all the results obtained exceed the NAB. The high value is caused by the environmental conditions is open and also affected by indeterminate sunlight, the risks received the welders in watery eye and headache because of the welder are disobey in using PPE while welding process.
Rancang Bangun Sistem Monitoring Suhu dan Salinias pada Air Laut Azizah Bella Azizah Bella; Devina Rayzy Perwitasari Sutaji Putri; Idris Mandang
Progressive Physics Journal Vol 2 No 1 (2021): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.198 KB) | DOI: 10.30872/ppj.v2i1.767

Abstract

Knowing the condition of the waters is very important for the sustainability of aquatic ecosystems. The condition of the waters so as not to have a bad impact on aquatic ecosystems can be known through temperature and salinity parameters. Seawater temperature is the distribution of heat in the ocean caused by the movement of water and other factors. The salinity of seawater is the level of saltiness or the level of salt dissolved in seawater. Temperature can be measured using a thermometer and salinity is measured using a refractometer. However, using these tools requires time, effort, cost, and manual data retrieval processes. Therefore, this research aims to make a temperature and salinity measuring instrument and determine the relationship between Voltage and salinity in the seawater. This research used the method of measuring electrical conductivity (DHL) to determine a change in magnitude. The temperature and salinity design consisted of an Arduino Uno, a YL-38 Module, and copper as an electrode, and a DS18B20 Temperature Sensor. the result of this research shows that has been done, the average error presentation of salinity is 0.00732% and temperature is 0.044 %. Through this research, salinity and the temperature instrument produced using electrodes made of copper and DS18B20 which operate at a Voltage of 4,8 Volts. The obtained a linear graph between stress and salinity. The relationship between voltage and salinity is directly proportional, the higher the salinity of seawater, the greater the output voltage.
Analisis Koefisien Serapan (Absorbsi) kebisingan pada Bahan Kayu (Triplek, Papan Kayu dan Kalsiboard) siti istikhomah; Syahrir Syahrir; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 2 No 1 (2021): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1481.755 KB) | DOI: 10.30872/ppj.v2i1.748

Abstract

Noise is a sound that humans do not want and it is an environmental factor that can negatively affect health. To overcome the noise issue, many efforts have been made to reduce noise levels. An example is the manufacture of the walls of a house using materials with sound and absorbent standards. The materials used can also be derived from types of wood such as plywood, wood panels and calciboards. Therefore, the value of its sound absorption coefficient is calculated to find out which active material is to be used in the manufacture of the building. Based on the research results, the value of the sound absorption coefficient of the three types of materials, it can be seen that the shape of the graph and its analysis states that the lowest sound absorption coefficient is most likely at the lower frequencies and the highest value of the sound absorption coefficient tends to be at the higher frequencies. In fact, when viewed as a whole, the magnitude and magnitude of the sound absorption coefficient on the graph is not in line with the increase in the frequency value.
Pembuatan dan Karakterisasi Rochelle Salt Crystal M. Wafieq Akbar Al Asyrafi; Adrianus Inu Natalisanto; Rahmat Gunawan
Progressive Physics Journal Vol 2 No 1 (2021): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1064.98 KB) | DOI: 10.30872/ppj.v2i1.745

Abstract

Rochelle Salt is the first synthesis Crystal made by Pierre Siegnette La Rocchelle in France. Rochelle Salt have several characteriztion one of them is piezoelectric effect where the crystal can change the kinetic energy to electrical energy instead this is the one of rewenable source altenative energy. Rochelle Salt can be made with tartar cream and washing soda reacted with distilled water as a solvent. The solution is reacted until there is no more reaction or supersaturation condition. Wait the solution for 2 days until the crystal seed appears. The crystal growth using the method of growing crystal in solution for 1 month until the crystal bigger enough for research to find the piezoelectric effect. Based on the result that have been obtained, Rochelle Salt have piezoelectric effect. Crystal hit using with wooden hitter and metal hitter, the voltage is increase when the crystal is hit by hitter. The piezoelectric also disappear along with time.
Rancang Bangun Sistem Monitoring Suhu dan Kelembaban Tanah pada Media Tanam Berbasis Mikrokontroler ATMEGA328P Putri Islam Nur Hikmah; Mislan Mislan; Rahmiati Munir
Progressive Physics Journal Vol 2 No 1 (2021): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.406 KB) | DOI: 10.30872/ppj.v2i1.752

Abstract

Information of temperature and humidity in planting media is very important for cultivation activities and the process of plant growth, where the real time process is very useful to determine the watering process on planting media. The purpose of the research that has been done was to design a monitoring system for soil temperature and humidity on the planting media and to make an automatic plant watering sprinkler by detecting soil moisture. A design for monitoring soil temperature and humidity on planting media has been made with a microcontroller. This instrument works when the pump detects soil with a range ​​from 0-3 cm/Hg for dry, 3.1-6 cm/Hg for moist and 6-7.9 cm/Hg for wet. When the soil is dry, the pump will work by removing water and stop when the soil is damp or wet.

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