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JOURNAL ONLINE OF PHYSICS
Published by Universitas Jambi
ISSN : -     EISSN : 25022016     DOI : -
Core Subject : Science,
Physics
Jurnal Online of Physics muncul sebagai wadah publikasi ilmiah dibidang fisika murni dan fisika terapan. Jurnal ini terbit secara online dua kali setahun yaitu pada bulan Juni dan Desember. Jurnal ini di terbitkan oleh program Studi Fisika Fakultas Sains dan Teknologi Universitas Jambi.
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Articles 17 Documents
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Search results for , issue "Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1" : 17 Documents clear
ALAT MONITORING SUHU DAN DETAK JANTUNG MANUSIA BERBASIS INTERNET OF THINGS MENGGUNAKAN BLYNK Masthura Masthura; Mulkan Iskandar Nasution; Rajai Sitorus
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.25905

Abstract

The purpose of this research is to create and design a way to monitor temperature and human heart rate based on the Internet of Things using blynk. The process of making an Internet of Things-based human heart rate and temperature monitoring device begins with hardware design by connecting all tools, namely, NodeMCU Esp8266, Base Board, Mlx90614, Max30100, Oled, Led, and Buzzer followed by designing software on Arduino and the blynk application where later the measurement results will be compared with the actual tool commonly used, namely the Tensimeter. Based on previous research conducted by Agung (2019), a heart rate and body temperature measuring instrument was made using the Ds18b20 temperature sensor and the Max30100 sensor with Bluetooth Hc-05 communication with an accuracy of 99.1% on heart rate and 99.4% on body temperature, and previous research conducted by Jarot (2021), heart rate measurements were carried out with a pulse sensor 3 times with an error of 16.7 – 20%, as well as previous research conducted by Muhlis (2019). 2017), measurements of heart rate and body temperature were carried out wirelessly with a pulse sensor using 10 objects with an error of 4.94% and using an LM35 with 10 objects with an error of 1.66%. In this study using 3 different people objects which were measured 3 times for each object. with an average error percentage of 0.91% for body temperature and 2.90% for heart rate. after going through the process of hardware design and software design, we have succeeded in designing a temperature monitoring device and human heart rate that can be monitored remotely using the blynk application and has functioned properly and works according to its function and has the advantage of being easier to monitor because it is based on the Internet of Things in real time and has very accurate accuracy with measuring instruments commonly used compared to previous studies.
ANALISIS LAGRANGIAN NULL NONSTANDAR DAN FUNGSI GAUGE UNTUK HUKUM INERSIA NEWTON : SEBUAH REVIEW Amelia A.P Ambot; Herry F. Lalus; Hartoyo Yudhawardana
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.25909

Abstract

This paper describes a review of a journal entitled 'Nonstandard Null Lagrangians and Gauge Functions for Newtonian Law of Inertia' which discusses Nonstandard Lagrangian Null solutions for Newton's Law of Inertia. The purpose of this study is to present in detail the Lagrangian Formalism method for generating Nonstandard Lagrangian Null and its Gauge function for Newton's Law of Inertia, as well as the role of action invariant in generating Lagrangian Null and Exact Gauge functions, by deriving a one-dimensional oscillator arm using the basic Lagrangian equations. The Nonstandard Null Lagrangian is derived from the Nonstandard Lagrangian, then the two Lagrangian Null are entered into the action invariant to make it Exact, after the Nonstandard Lagrangian Null is declared Exact, it is substituted into  which represents Newton's Law of Inertia. The results of this research show that an Exact Nonstandard Lagrangian Null can be generated by making the Gauge Function Invariant, so that the first Nonstandard Lagrangian Null and Gauge Function for Newton's Law of Inertia are obtained.
PERANAN AKIVATOR DAN LUAS PENAMPANG KARBON AKTIF TERHADAP KEMAMPUAN ADSORPSI KARBON AKTIF PADA MINYAK GORENG BEKAS PAKAI Miftahul Husnah; Ridwan Yusuf Lubis; Lisa Astari
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.26005

Abstract

Used oil or used cooking oil is oil that is produced from leftover frying. The high price of cooking oil and the high need for use also makes fried traders use used cooking oil continuously which has a negative impact on health. This study aims to determine the role of activators and cross-sectional area on the adsorption ability of activated carbon produced from nipa palm shells in the process of refining used oil. The sample used is used cooking oil which is then adsorbed using activated carbon with different cross-sectional areas. Analysis of the cross-sectional area shows that variations in the concentration of NaCl as an activator in the manufacture of activated carbon from nipa palm shells affect the cross-sectional area, the higher the concentration of NaCl activator, the greater the cross-sectional area of activated carbon produced. The surface area of activated carbon activated by NaCl 0M, 4M, 6M and 8M had respective values of 11.1489 m2/g, 11.4487 m2/g, 11.5028 m2/g, 11.5079 m2/g. The results show that the greater the cross-sectional area of activated carbon, the greater the ability of activated carbon to adsorb used oil, with a value of water content and volatile matter of 0.2612% - 0.1195%, peroxide of value (POV) of 11.8629 meq/g - 5.3029 meq/g, Acid Value (AV) of 1.3368 mg KOH/g - 0.5393 mg KOH/g. Optimum results were obtained on activated carbon activated with 8M NaCL activator, this was due to the increasing concentration of the activator, more pores were formed so that the absorption capacity of activated carbon also increased.
PENERAPAN METODE RESISTIVITAS KONFIGURASI SCHLUMBERGER UNTUK MENDETEKSI PERSEBARAN AIR LINDI (STUDI KASUS TPA TERJUN MARELAN) Afniar Harahap; Ratni Sirait; Lailatul Husna Lubis
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.27281

Abstract

Leachate has the potential to be used as organic fertilizer because it contains high levels of minerals and organic matter. In the leachate there are several compounds, namely heavy metal compounds, salts, nitrogen compounds and various types of other organic matter. Leachate leachate also contains very fine suspended matter from the decomposition of microbes, usually consisting of Ca, Mg, Na, K, Fe, Chloride, Sulfate, Phosphate, Zn, Ni, CO2, H2O, N2, NH3, H2S, Organic acids , and H2. This study aims to find out how the subsurface layer in the Medan Marelan Falls Landfill area, the distribution of leachate in the Medan Marelan Falls Landfill. 1D resistivity measurements were only carried out in the Medan Marelan Falls TPA area. The geophysical method used in this study is the Schlumberger configuration. This research was conducted at three points along the 200 meter track. on line I is at a depth of 6.92 m with a resistivity value of 3.16 Ωm with a North to South flow direction. On track II it is at a depth of 1.15 m, 4.53 m, and 22.1 m with a resistivity value of 1.5 Ωm, 2.25 Ωm, and 5.05 Ωm respectively with the North to West flow direction. On track III it is at a depth of 1.19 m, 20.8 m, and 53.9 m with resistivity values of 1.54 Ωm, 3.51 Ωm, and 1.13 Ωm respectively with North to West flow direction. The distribution of leachate at the Medan Marelan Falls TPA which dominates is on track III marked with black to bluish color images.
ANALISIS DOSIS PAPARAN RADIASI DARI PESAWAT PANORAMIK DI INSTALASI RADIOLOGI RUMAH SAKIT UMUM DAERAH RADEN MATTAHER JAMBI Chintiya Romarti; Jesi Pebralia; Rista Mutia Anggraini
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.27310

Abstract

This research aims to analyze the influence of distance and direction on radiation exposure values, assess the doses received by radiation workers and the general public, and evaluate the effectiveness of radiation protection from panoramic aircraft. The research method used is an experimental research method, where the researcher directly measures the variables of the study and conducts data analysis. The study was conducted by measuring radiation doses in various directions at distances ranging from 0.5 meters to 2.5 meters forward and to the right, and 0.5 meters to 1.5 meters to the left. Dose data reception was taken at operator room, service area, corridor, and waiting room points, and radiation protection effectiveness measurements were taken at corridor entrance, waiting room, and operator room points using a survey meter. The research results indicate that the radiation exposure dose is inversely proportional to the measured distance. The dose received by radiographers in the operator room is 0.107 μSv/hour, in the employee corridor, it is 0.0856 μSv/hour, and in the public waiting room, it is 0.0856 μSv/hour. The radiation protection effectiveness value in the operator room is 94.40%, at the patient entrance from the panoramic aircraft waiting room, it is 92.12%, and at the radiographer entrance from the employee corridor, it is 94.62%. According to the Tenth Value Thickness (TVT) concept, this is considered safe because the existing protection capabilities can effectively absorb radiation.
ANALISIS FUNGSI KORELASI KLASIK DAN KUANTUM UNTUK MODEL CINCIN: SEBUAH REVIEW Ayu Ningsih P. A. Sunaryo; Herry F. Lalus; Hartoyo Yudhawardana
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.27501

Abstract

A review of the journal entitled 'Classical And Quantum Correlation Functions For A Ring Model' has been carried out which discusses the solutions of classical and quantum correlation functions for the ring model. Classical and quantum correlation functions are derived for systems of non-interacting particles moving in a circle. demonstrated that the decay behavior of the classical expression for the correlation function can be recovered from a strictly periodic quantum mechanical expression by taking the limit ℏ→0, after the appropriate transformation. The aim of this study is to present clearly and in detail how the position correlation function for a system of particles moving in a circle having a certain average energy and written in a form which shows the nature of the transformation. Next, we examine the use of Poisson addition to represent F(z), and how the correlation function becomes identical to the form given by classical statistical mechanics, which exhibits Gaussian decay. The results of this study indicate that the positional correlation function for a system of particles moving in a circle, and having a certain average energy, can be written in a form which shows the nature of the transformation. Then using the Poisson addition formula to represent F(z), the expression is rewritten to enable the limit ℏ→0 to be taken. It was finally found that the correlation function became identical to the form given by classical statistical mechanics, which exhibits a Gaussian decay.
ANALISIS UJI TARIK KOMPOSIT SERAT BATANG KELAKAI DENGAN VARIASI KATALIS UNTUK PEMBUATAN MATERIAL BUMPER MOBIL Rusly, Muhammad; Sulistyowati, Rita; Lumban Toruan, Parmin
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.27670

Abstract

A research was conducted to create car bumper materials using natural kelakai plant fibers combined with a catalyst and resin as a binding agent in the composite. The main goal of the study was to examine the tensile strength of the kelakai fiber composite with different catalyst variations and assess the impact of these catalyst changes on the bumper material's tensile strength. The composite materials were prepared in three test specimens with catalyst compositions of 2,5%, 5%, and 7,5%, respectively, based on a 20 mL resin composition. These samples underwent tensile testing using a Universal Testing Machine (UTM). The results revealed that the tensile strength of the kelakai fiber composite increased with higher catalyst percentages. At 2,5%, 5%, and 7,5% catalyst compositions, the tensile strengths were measured as 0,37 N/mm2, 0,41 N/mm2, and 0,47 N/mm2, respectively. Additionally, the elongation values for the catalyst portion are 1,11%, 2,22%, and 3,89% and the Young's modulus values are 0,33 N/mm2, 0,18 N/mm2, and 0,12 N/mm2, respectively. The study demonstrates the significant influence of catalyst variations on the tensile strength of the kelakai fiber composite.
PENGGUNAAN BIJI KELOR (Moringa oleifera L.) DAN BIJI ASAM JAWA (Tamarindus indica L.) PADA PENJERNIHAN AIR SUMUR BOR MELALUI PROSES KOAGULASI DAN FLOKULASI DENGAN METODE SENTRIFUGASI Annisa Aulia Pratiwi; Masthura Masthura; Miftahul Husnah
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.27728

Abstract

Drilled well water at the Ar-Rahmat Mosque in Manunggal Village, Labuhan Deli District, Regency Deli Serdang, North Sumatra Province, has a color that tends to be yellow and cloudy. From the test results, it was found that the turbidity level in the drilled well water reached 35.3 NTU and the iron (Fe) content reached 1.679 mg/L. This shows that the borehole water does not meet clean water standards according to PERMENKES RI No.32 of 2017, namely with a maximum turbidity level of 25 NTU and a maximum iron (Fe) content of 1.0 mg/L. There is one way to purify borehole water by using moringa seeds and tamarind seeds in the coagulation and flocculation processes through the centrifugation method. This study aims to determine the most optimal seed composition in purifying well water. The mass variations used in this study were moringa seeds and tamarind seeds each with a mass of 0.08 grams and 0.09 grams. In this study, the results of the most optimal seed composition for purifying borehole water were tamarind seeds at a mass variation of 0.08 gram with a turbidity value of 0.53 NTU and a value of iron (Fe) content of 0.0087 mg/L. This shows that the drilled well water that has gone through the water purification process meets the PERMENKES RI standard No. 32 of 2017.
ANALISIS MEKANIK DAN TERMAL MATERIAL KOMPOSIT BERBASIS SERAT ECENG GONDOK SEBAGAI BAHAN KEMASAN RAMAH LINGKUNGAN Acep Musliman; Fitri Damayanti
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.28125

Abstract

This study aims to analyze the mechanical and thermal properties of water hyacinth fiber-based composite materials as an alternative to environmentally friendly packaging materials. This composite material is produced by mixing water hyacinth fiber with a natural polymer matrix that can decompose easily. Manufacturing methods include mixing, pressing, and thermal treatment processes. The mechanical properties of composite materials, including tensile strength and resistance to deformation, are tested using tensile tests and hardness tests. Thermal analysis is carried out through thermogravimetric tests (TGA) to identify the thermal stability and decomposition of the material. The results showed that the water hyacinth fiber-based composite materials had fairly good mechanical properties in certain mixture compositions, although they were not as strong as composite materials using synthetic fibers. However, this material shows potential in packaging applications that do not require extreme mechanical strength. The mechanical properties of the water hyacinth fiber composite produced lead to the fulfillment of the need for use as packaging, which is light, flexible and not easily broken. The thermal properties of the composites show faster decomposition compared to synthetic fiber based composites, but are still within the acceptable range for single-use packaging. With its environmentally friendly properties, this composite material can be an attractive alternative to reduce the use of plastic in the packaging industry. Nonetheless, improvements in manufacturing processes and material formulations are still required to improve their mechanical and thermal properties and maintain packaging durability under diverse usage conditions.
TEMPAT SAMPAH PINTAR “MYSMARTRECYLEBIN” BERBASIS TEKNOLOGI INTERNET OF THINGS (IOT) DAN BIG DATA Feri Febria; Syauqie Muhammad Marier; Imas Siti Maisarah
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.28146

Abstract

This research aims to develop "MySmartRecyleBin," a smart trash bin that utilizes Internet of Things (IoT) technology and Big Data in many cities around the world that face serious challenges in waste management. This research was conducted to face the urgency of handling the increasingly pressing waste problem. The aim is to help governments and waste managers overcome waste management challenges in a more sustainable manner, reduce waste management costs, and strengthen waste management systems. This research involves researchers and developers of IoT and Big Data technology collaborating to create a smarter and more efficient waste management system. By utilizing IoT and Big Data technology, this research produces a system that allows real-time data collection from various devices connected to the internet, such as sensors on trash cans and waste transport fleets. This data is then analyzed to understand user behavior and waste collection patterns. Through this technology, the waste management system can become more effective and efficient. This technology uses a Microcontroller, Load Cell, RFID Tag, and RestFull API Technology as a communication medium to the Waste Management Information System (MySipah). The test results show the success of sending data over the last 1 year, namely January 2022 is 152 kg, February 2022 is 109 kg, March 2022 is 93 kg, April 2022 is 113 kg, May 2022 is 126 kg, June 2022 is 161 kg, July 2022 is 188 kg, August 2022 is 143 kg, September 2022 is 102 kg, October 2022 is 113 kg, November 2022 is 116 kg, December 2022 is 124 kg.

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