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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 35 Documents
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Studi Adsorpsi Logam Berat Besi (Fe) dan Timbal (Pb) Air Sungai Mahakam oleh Limbah Cangkang Telur dan Abu Gosok Alris Sanca Pratama Putra; Rahmawati Munir; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 3 No 2 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.848 KB) | DOI: 10.30872/ppj.v3i2.929

Abstract

Waste could be found easily anywhere such as eggshells and rubbing-ash. Being a non-usable rubbish, These type of waste can be usefull in someways with a right treatment and deep research on compound material with in. The physical content from these waste utilized to be an adsorbent, it adsorbs a metal content e.g Mahakam river water sample. Main purpose of this research was based on benefical content from eggshells and rubbing-ash as their ability decreasing metal content. This study concluded experimentally using adsorbtion methods, a device such as Atomic Absobtion Spectrophotometer (AAS) was used to test the decreasing effect on logam content. The obtained data from testing process used to analyzed a metal concentration that disolved in water sample. This study results on decreasing metal concentration such as Fe and also Pb on Mahakam river water sample. Fe concentrat on these water sample shows decline rate from 1,5 mg/L to 0,11 mg/L given certain treatment adding eggshels powder. And also Pb content reduced from 1,69 mg/L to 0,24 mg/L indicate a little waste content from treated water sample. Inference from this study suggest addition of eggshells and rubbing-ash waste in form of powder had decreasing-effect on soluble metal content from Mahakam River water sample.
Penerapan Geostatistika Ordinary Kriging dalam Estimasi Harga Tanah (Studi Kasus: Kecamatan Samarinda Utara Kota Samarinda) Mutiara Ayu Lestari; Piter Lepong; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 2 No 2 (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 (1918.445 KB) | DOI: 10.30872/ppj.v2i2.800

Abstract

Abstract Ordinary kriging geostatistical method is an interpolation method that used spatial data. This method generally used to estimate coal and mineral resources. However, over time this method is also used in estimating land prices. The purpose of this research is to determine the best model for land price estimation in North Samarinda District, especially in Sempaja Selatan Sub-District between spherical models, Exponential models and Gaussian models and to determine land price estimation using ordinary kriging geostatistical method based on the best semivariogram model displayed in the form of a contour map. The estimation process begins by create an experimental semivariogram and a structural analysis which is carried out to obtain sill, nugget and range. Then, interpolated using the three models to get the predicted value and calculated RMSE to determine the performance of the model, which the spherical model is the best model because it has the smallest RMSE value. From this method, a contour map of the estimation results of land prices in Sempaja Selatan Sub-District of North Samarinda District is obtained. The lowest land prices are found to be predominantly located in the northwest and north of Sempaja Selatan Sub-District. The lowest price of the land range from Rp. 279,000,- to Rp. 900,000,- per m2 and the highest price of land is predominantly located in the southern part of Sempaja Selatan Sub-District with prices ranging from Rp. 2,982,000, - to Rp. 4,981,000, - per m2. The variation in land prices in Sempaja Selatan Sub-District of North Samarinda District is influenced by physical factors, namely the elevation and slope of the slope. Low land prices tend to be in areas of high elevation and steep slopes, while high land prices are at low elevations and with a slope that is flat. So from this, it can be said that the land price is inversely proportional to the physical factor of the land.
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.
Rancang Bangun Prototipe Monitoring Suhu dan Kelembaban Udara Berbasis Internet Of Things (IOT) Pada Laboratorium Kalibrasi Balai Pengujian dan Sertifikasi Mutu Barang Samarinda Muhammad Awaluddin; Syahrir Syahrir; Ahmad Zarkasi; Erlinda Ratnasari Putri
Progressive Physics Journal Vol 3 No 1 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (778.175 KB) | DOI: 10.30872/ppj.v3i1.910

Abstract

Telah dilakukan penelitian tentang rancang bangun prototipe monitoring suhu dan kelembaban udara berbasis internet of things (IoT) pada Labratorium Kalibrasi Balai Pengujian dan Sertifikasi Mutu Barang (BPSMB) Samarinda. Penelitian ini bertujuan merancang prototipe yang dapat mengukur suhu dan kelembaban udara menggunakan sensor BME280 berbasis mikrokontoler NodeMCU ESP8266. Tahapan penelitian dilakukan dengan merancang perangkat keras dan perangkat lunak prototipe menggunakan BME280 sebagai sensor yang dapat mengukur suhu dan kelembaban udara dan NodeMCU ESP8266 sebagai kontrol utama yang dilakukan di Laboratorium Elektronika dan Instrumentasi Universitas Mulawarman. Tahap selanjutnya, dilakukan pemantauan suhu dan kelembaban udara di Laboratorium Kaibrasi Balai Pengujian dan Sertifikasi Mutu Barang Samarinda. Hasil perancangan prototipe dapat mengukur suhu dan kelembaban udara seacara realtime serta dapat dimonitoring menggunakan smartphone melalui aplikasi blynk dan hasil monitoring di Laboratorium Kalibrasi BPSMB Samarinda menunjukkan bahwa laboratorium tersebut berada pada suhu ideal yaitu 18 - 22 sesuai standar acuan JIS Z 8710 (Japanese Industrial Standard).
Pembangkitan Plasma Menggunakan Metode High-Voltage Direct Current Untuk Aplikasi Direct Current Magnetron Sputtering Syarifah Nihlah Yahya; Fadli Robiandi; Ikal Maknun
Progressive Physics Journal Vol 2 No 2 (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 (1379.455 KB) | DOI: 10.30872/ppj.v2i2.778

Abstract

Direct Current (DC) magnetron sputtering is one of the Physical Vapour Deposition (PVD) technique that use plasma as a medium. In this experiment, vacuum pumps, vacuum tubes (plasma reactor), capacitor, MOT transformers, HV bridge diodes, and regulator transformers is the main instrumen of DC magnetron sputtering. By ionizing the trapped gas inside the vacuum tube we created the plasma. The ionization process can be done by giving DC high voltage electricity to the trapped gas in the plasma reactor that formed plasma. DC high voltage electricity (at 800-1600 Volt) can be form using regulator transformers, MOT transformers, HV bridge diodes, and HV capacitor. Plasma’s are ignited with the distance between the electrodes which is 2, 4, 6, and 8 cm and two different vacuum pump. From the experiment we got plasma at 35 Volt on regulator transformers or 464 Volt that measure on the electrodes.
Studi Penggunaan Bolus Berbahan Silicone Rubber terhadap Dosis Permukaan pada Radioterapi Berkas Elektron Gede Wiratma Jaya; Heri Sutanto; Eko Hidayanto; Galih Puspa Saraswati
Progressive Physics Journal Vol 1 No 1 (2020): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (394.408 KB) | DOI: 10.30872/ppj.v1i1.561

Abstract

Radiotherapy is a method of externally cancer therapy using a Linear Accelerator (LINAC) tool. LINAC can produce photon and electron beam energy which will be used to treat cancer according to the position of the cancer in the patient's body. When using an electron beam to treat cancer on the surface of the skin, it is found that there is a lack of a radiation dose. The use of bolus with Silicone Rubber (SR) material is a solution to provide an increase in radiation doses in the surface area of the skin. In this study SR boluses were made using the sol-gel method with dimensions of 17 cm x 17 cm x 1 cm. The SR Bolus was illuminated with an applicator field area of 10 cm x 10 cm and energy variations of 5 MeV and 7 MeV. The surface dose produced at the moment without using a bolus for 5 MeV and 7 MeV energy is 1.60 Gy and 1.61 Gy. When using bolus, the surface dose of 5 MeV and 7 MeV energy is 2.12 Gy and 2.06 Gy. From the results of this study it can be concluded that the use of SR bolus can increase a higher surface dose without using bolus.
Analisis pertukaran udara per jam pada ventilasi laboratorium di kawasan hutan hujan tropis Namira Yolanda; Erlinda Ratnasari Putri; Rahmawati Munir
Progressive Physics Journal Vol 3 No 2 (2022): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.749 KB) | DOI: 10.30872/ppj.v3i2.933

Abstract

Kalimantan is an island surrounded by tropical rain forests and has hot and humid weather because it is crossed by the equator. The hot and humid weather affects the human working climate in the exchange of air in the room, for example in the laboratory. This study objective was to know the amount of air exchange per hour at the Samarinda Occupational Safety and Health Center. The tools used were the TESTO 425 anemometer, a digital meter, a lutron-abh 4225, and a laptop. The chambers where air changes per hour measured were the main laboratory, weighing chamber, UV-VIS spectrophotometer chamber, and atomic absorption and chromatography spectrophotometer chamber. Based on the results of measurements and data analysis, it can be concluded that the ventilation system of 3 out of 4 laboratory chambers has met the recommendation. The calculation step was carried out by entering the measured parameters into the ACH equation. The last stage, the analysis was carried out to compare the ACH values based on the ASHRAE recommendations. Based on the results, the average value of ACH for the main laboratory room was 3,8 x/hour, weighing chamber was 15,61 x/hour, UV-VIS spectrophotometer was 12,7 x/hour, and atomic absorption and chromatography spectrophotometer chamber was 12,78 x/hour. The average number of air changes per hour (ACH) at the laboratory is 11,22 x/hour, where the amount of air changes per hour is in accordance with the ASHRAE (2011) recommendation for a good and healthy environment, the ASHRAE recommendations with the ACH of the Laboratory room ranging from 6 to 12 x/hour. It can be concluded that wind speed, cross-sectional area, and room volume affect the amount of air exchange per hour.
Penilaian Tingkat Risiko Postur Kerja Menggunakan Metode REBA dan Biomekanika Pada Aktivitas Mengangkat Beban Aldi Rizki Jordan; Pratiwi Sri Wardani; Kadek Subagiada; Devina Rayzy Perwitasari Sutaji Putri; Adrianus Inu Natalisanto
Progressive Physics Journal Vol 4 No 1 (2023): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v4i1.1021

Abstract

The activity of lifting weights has many risks that can lead to complaints and work accidents such as mistakes in lifting excessive loads, overly bent postures, and other complaints that result in uncomfortable working conditions. This research was conducted to determine the risk level of work posture using the REBA method and biomechanics in lifting weights with different lifting variables. The research were took documentation data, angle and distance measurements by using the Kinovea application, and the data analyzed by using the REBA Assessment Worksheet and biomechanical equations. Based on the results obtained, the activity of lifting burdens on workers from the aspect of the REBA method mostly has a high level of risk category and only 1 worker has a moderate level of risk category. Meanwhile, from the biomechanics aspect, most of them have a risk level in the careful category, 1 worker has a risk level in the safe category, and 1 worker who has lifted a load of 50 kg has a risk level in the dangerous category.
ANALISIS ISODOSIS TEKNIK TIGA DIMENSI DENGAN LAPANGAN KRANIOSPINAL PADA PASIEN ANAK Radila Mawar Sari; Adrianus Inu Natalisanto; Devina Rayzy Perwitasari Sutaji Putri
Progressive Physics Journal Vol 4 No 1 (2023): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v4i1.958

Abstract

Craniospinal is known as the method to kill the cancer within a wide radiation area, starting from the cranial to spinal nervous system. In the case, the cancer has spread through the fluid of cerebro spinalis, such as medulloblastoma. We carried out the research to determine the isodose curve in medulloblastoma craniospinal patients and DVH (Dose Volume Histogram) statistic in the OAR (Organ at Risk) by using 3D-CRT radiotherapy technique. To conduct the radiative treatment, we used the moving Junction method in which the radiation was divided into three Iso section, i.e.: Section Iso brain with gantry 90° and 270°, Section Iso thoracic with gantry 0°, and Section Iso lumbar with gantry 0°. Then, we analyzed the isodose curves and DVH statistics created by photon beams of 6 MV and 10 MV with and without considering the dose absorbed by OAR. We found that the isodose curves created with considering the OAR dose were better than those created without considering the OAR dose. We also found that the dose absorbed by OAR was within the tolerance limit stated in ICRU guidelines. Kata Kunci: DVH of statistic, Isodose curve, Craniospinal, Medulloblastoma
Pengaruh Iklim Kerja Panas Terhadap Respon Fisiologis Pekerja dalam Ruang Preparasi di PT-X nur shabrina ulima fitriani; Adrianus Inu Natalisanto; Devina Rayzy Perwitasari Sutaji Putri; Mislan Mislan; Erlinda Ratnasari Putri
Progressive Physics Journal Vol 4 No 1 (2023): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ppj.v4i1.1025

Abstract

Work climate is one of the factors whose gave big influence on the performance of human resources, for both in hot work climate and cold work climate, even the effect is not limited to performance but can go further, specifically on the safety and health of workers. For this reason, it is necessary to measure and evaluate the working climate standard. This study was conducted to determine the effect of hot working climate on the physiological response of workers in the preparation room at PT-X and to find a temperature control strategy in the preparation room at PT-X. The research were carried out in 4 steps, namely: first was collecting data on the work climate in the Preparation Room at PT-X, second was collecting data on the workload of workers in the Preparation Room at PT-X, third was collecting data on the physiological response of the worker in the form of measuring body temperature, measuring blood pressure, measuring pulse rate and measuring the weight of workers. The last step was analysis. Based on the results of the research, the hot working climate affects the physiological response of the workers before and after work. The strategy for controlling the hot working climate in the Preparation Room at PT-X is by increasing the rest time for workers, maximizing the use of PPE (Personal Protection Equipment) for each worker, and adding health signs at the worker's location.

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