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Department of Physics, Universitas Negeri Gorontalo Lt.1 Gedung F.MIPA, Jl. Prof Dr. Ing B.J. Habibie, Desa Moutong, Kec. Tilongkabila, Kab. Bone Bolango, Provinsi Gorontalo 96119, Indonesia
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Jambura Physics Journal
Published by Universitas Negeri Gorontalo
ISSN : 26549107     EISSN : 27215687     DOI : https://doi.org/10.34312/jpj.v1i2
Core Subject : Science, Education,
Education Energy Materials Science & Nanotechnology Physics
The Jambura Physics Journal (JPJ) is the official journal of Physics Department, Faculty Mathematics and Natural Science, Universitas Negeri Gorontalo. JPJ is a peer-reviewed article publish articles twice a year in April and October. The research article submitted to this online journal will be peer-reviewed at least 2 (two) reviewers. The accepted research articles will be available online following the journal peer-reviewing process. The language used in this journal is English or Indonesia. The Jambura Physics Journal is an integrated forum for communicating scientific advances in the field of physics and education physics. The journal reports significant new findings related to physics applications and education physics, including learning media development, learning methods development, learning methods implementation, and several application of physics. The Jambura Physics Journal publishes comprehensive research articles and invited reviews by leading experts in the field. Papers will be selected that high scientific merit, impart important new knowledge, and are of high interest to physics and education physics community.
Arjuna Subject : Umum - Umum
Articles 7 Documents
 1 
Search results for , issue "Vol 5, No 1 (2023): April 2023" : 7 Documents clear
SISTEM KENDALI JARAK JAUH BEBAN LISTRIK RUMAH TANGGA BERBASIS INTERNET OF THINGS (IoT) Hermansyah Hermansyah; Nur Asmi Rahmawati; Alamsyah Achmad
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.19026

Abstract

This study aims to optimize the existing remote control system. Previous Remote Control Systems only operated on local networks using the TCP/IP model. The control system created is a remote control system development of the TCP/IP model. This control system can control and monitor the status of electrical loads using a smartphone device without being limited by distance. The method used in this research is the system design method. The result of this research is a prototype capable of controlling electrical loads from an unlimited distance. The test results show that the system works according to the program that was created. This system has great opportunities to be developed in terms of user access security.Penelitian ini bertujuan untuk optimalisasi sistem kendali jarak jauh yang sudah ada sebelumnya. Sistem Kendali jarak jauh sebelumnya hanya beroperasi pada jaringan lokal menggunakan model TCP/IP. Sistem kendali yang dibuat merupakan pengembangan sistem kendali jarak jauh model TCP/IP. Sistem kendali ini dapat mengontrol dan memonitor status beban listrik menggunakan perangkat smartphone tanpa dibataisi oleh jarak. Metode yang digunakan pada penelitian ini adalah metode sistem rancang bangun. Hasil dari penelitian ini adalah sebuah prototype yang mampu mengontrol beban listrik dari jarak yang tidak terbatas. Hasil ujicoba menujukkan bahwa sistem bekerja sesuai dengan program yang dibuat. Sistem ini memiliki peluang yang besar untuk dikembangkan dari sisi keamanan akses pengguna.
THE EFFECT OF HYDROTHERMAL TEMPERATURE AND UREA DOPING TIME ON THE OPTICAL PROPERTIES OF LEMONGRASS-BASED CARBON NANOPARTICLES (CNPs) Rahmaniah Nalwi; Akhiruddin Maddu; Mersi Kurniati; Jumardin Jumardin
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.19048

Abstract

Carbon Nano Particles (CNPs) sourced from spiced lemongrass have been produced by the hydrothermal method at hydrothermal temperatures of 120, 140, 160 and 180 0C. The Stokes energy shift occurs due to this absorption transition and the spectrum width is determined by the electronic transition from one energy state to another. This event occurs due to the difference in energy between the two adjacent states due to the smaller vibrational state when compared to the electronic state of the CNPs.  The carbon nanoparticles (CNPs) size measurement results showed a peak value of 38.63 nm.  Functional group analysis by FTIR spectroscopy showed that the CNP consists of C=C, C-O, OH and C-N-C bonds. The Urbach energy (Eu) increased with increasing hydrothermal synthesis temperature at two hours (0.13, 0.16, 0.19 and 0.29) eV and three hours (0.12, 0.17, 0.19 and 0.28) eV. The bandgap energy (Eg) decreased with increasing hydrothermal synthesis temperature to two hours (2.30, 2.24, 2.00 and 1.92) eV and three hours (2.22, 2.20, 2.17 and 1.75) eV. The expansion of urea as a nitrogen source was carried out at a aqueous temperature of 180 0C for 2 hours and 3 hours within the blend of CNPs. The addition of urea gave a different effect on the bandgap energy (Eg) and Urbach energy (Eu) on the two CNPs. The bandgap energy (Eg) both increased from two hours (1.92 eV) to three hours (2 .22 eV), while urbach energy (Eu) decreased for a duration of two hours (3.336 eV) to three hours (3.330 eV) after adding urea. hydrothermal temperature due to synthesis time so that the structure of the CNPs becomes more stable and homogeneous
THERMAL PERFORMANCE OF RESIDENTIAL HAUSE USING GREEN ROOF BY UTILIZING THE PASSION FRUIT PLANTS (PASSIFLORA EDULIS) AS ROOF COVER Suwaldi Mopangga; Mohamad Jahja; Dewa Gede Eka Setiawan; Mursalin Mursalin; Idawati Supu; Meilan Demulawa; Abdi Gunawan Djafar
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.19358

Abstract

Urbanization is the movement of people from villages to cities, this has caused an increase in population growth in urban areas resulting in increased demand for development which has reduced land for green spaces, green roofs are present as a farming concept amidst limited land in urban areas as well as assisting in passive cooling. The process of photosynthesis must play a role in roof shading. The selection of vegetation in the form of passion fruit vines as a roof covering material can spread up to 24 m, the object of research is a house in a housing complex by comparing two rooms, using a vegetation roof cover and without a vegetation roof cover, based on the results obtained a room with a vegetation roof cover experienced a decrease in temperature as the growth of vines covered the roof, the results obtained were a comparison between the two rooms, namely 0.1℃ in January, 1.1℃ in February and 2.6℃ in March when the peak temperature is during the day.
PAPAN PARTIKEL PEREDAM PANAS BERPENGUAT LIMBAH SERAT DAUN NANAS DAN KERTAS HVS SEBAGAI ALTERNATIF PERBAIKAN KUALITAS LINGKUNGAN DALAM RUANGAN Oktavia Oktavia; Diani Lestari; Risna Kirana Rokar; Widodo Budi Kurniawan
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.18778

Abstract

The limited supply of wood as a raw material in various industries requires a better alternative material. Wasted-based composite engineering can be a solution to this problem. What's more, composite can be engineered according to needs, such as having the ability to reduce heat to maintain comfortable room temperature conditions. Therefore, in this research, a particle board reinforced by pineapple leaf fiber waste and HVS paper waste was developed to know the effect of the particle board reinforcement composition on reducing heat. In this research, a comparison of pineapple leaf fiber waste and HVS paper waste was used at 100%:0%; 70%:30%; 50%:50%; 30%:70%; and 0%:100% with resin adhesive. This particle board is made by mixing all the ingredients and then printing it into a mold and then carrying out the drying process. The test was carried out based on a temperature difference analysis. The most optimum particle board reinforcement composition to reduce heat is 100% pineapple leaf fiber waste : 0% HVS paper waste.
MECHANICAL PROPERTIES OF SUGAR PALM (ARENGA PINNATA) ROPES AND NETS FOR AGRICULTURAL PURPOSES Mohamad Jahja; Kasim Dihuma; Dewa Gede Eka Setiawan; Tsutomu Yamaguchi; Andi Patiewere Metaragakusuma; Masayuki Sakakibara
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.19433

Abstract

Sample of Arenga Pinnata (AP) fibres, ropes and nets were prepared from AP ropes using traditional tools. The ropes and nets were used as agricultural material such as vertical farming of vines (passion fruit, grape, bitter gourd, and melon) in Gorontalo and Japan. The combination of nets and vines acts as green curtain (GC) which. Could mitigate the thermal energy in outdoor as well as indoor buildings. and tested with the deformation rate of up to the point of rupture. To avoid the failure of ropes and nets on supporting the weight of the vines, the Universal Testing Machine Model WDW-50 were used to determine the ultimate tensile forces. While the physical size of the AP fibres, ropes and nets also being measured to confirm the uniformity of the individual ropes and nets
RANCANG BANGUN SISTEM KONTROL MINIATUR ALAT PEMINDAH MATERIAL PADA PROSES DISTRIBUSI BIJIH NIKEL MENGGUNAKAN PLC Abdul Haris Mubarak; Moh Afandy; Muhammad Khaidir
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.18466

Abstract

This research aims to make a miniature ore material transfer tool automatically using Omron PLC. The way this tool works is that when the start button is pressed, motor 1 will move the apron containing the ore to be taken to the 3 storage barrels to be filled alternately. In each storage barrel, a proximity sensor is installed to detect the level of ore filling. On the rails that are passed by the apron, there are three limit switches that serve as indicators that the position of the apron is right above the storage barrel, then motor 2 will open the valve on the apron so that the ore on the apron falls into the reservoir. From this research, we have succeeded in obtaining an automatic control system for a miniature material transfer device in the ore distribution process.
PENGEMBANGAN TES DIAGNOSTIK UNTUK MENGIDENTIFIKASI PEMAHAMAN KONSEP SISWA SMA PADA POKOK BAHASAN GELOMBANG BUNYI Unggul Wahyono; I Made Hermanto; Nurhayati Nurhayati; Lukman Samatowa; Wahyu Muzizat Mohamad; Ni Luh Sri Maharani
Jambura Physics Journal Vol 5, No 1 (2023): April 2023
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jpj.v5i1.19294

Abstract

This study aims to develop a diagnostic test for understanding the concept of sound waves and to test the validity and reliability of the test. The research method used is development research with reference to the ADDIE model (Analyzing, Designing, Developing, Implementing, Evaluating). This research was conducted at a senior high school in the city of Bandung involving 30 students as respondents. The stages of developing a diagnostic test include literature study, needs analysis, formulating competencies and indicators, developing test items, expert validation, test trials, reliability analysis, ease of analysis, discriminating power analysis, and item selection. The validity of the diagnostic test for understanding the concept of sound waves was tested using several techniques, such as content validation and construct validation. While the reliability of the diagnostic test was tested using the K-R.20 calculation. The results showed that the developed diagnostic test for understanding the concept of sound waves had good validity and reliability. This test can be used to measure students' understanding of the concept of sound waves and to identify difficulties experienced by students in understanding the concept.

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