cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Sadang Husain
Contact Email
sadanghusain@yahoo.com
Phone
-
Journal Mail Official
jurnalflux@ulm.ac.id
Editorial Address
-
Location
Kota banjarmasin,
Kalimantan selatan
INDONESIA
Jurnal Fisika FLUX
Published by Universitas Lambung Mangkurat
ISSN : 1829796X     EISSN : 25411713     DOI : -
Core Subject : Science, Education,
Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
Jurnal Fisika FLUX is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of physics including applied physics, which includes: physics instrumentation and computation, biophysics, geophysics, physics materials, theoretical physics, and physics education. Journal use single peer reviewed to publish. This journal is published by Universitas Lambung Mangkurat Press. ISSN 1829-796X (print) and ISSN 2541-1713 (online) Jurnal Fisika FLUX is published twice a year. Articles will be peer reviewed first. Once ready to be published immediately on the current edition.
Arjuna Subject : -
Articles 9 Documents
 1 
Search results for , issue "Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat" : 9 Documents clear
The Effect of Annual Apparent Motion of the Sun on the Early Oscillation of Shubuh Prayer Time (Case Study of Pontianak City) Asep Saefullah; Diana Ayu Rostikawati; Yuant Tiandho
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.15899

Abstract

This Study aims to determine the effect of the Sun's annual apparent motion on the oscillations of the Subuh prayer time, especially in the city of Pontianak. The research method used is the literature review or reference method. In the literature review, the things that were done included: looking for the schedule of the dawn prayer in the city of Pontianak over one year, knowing the geographical position of the city of Pontianak, the apparent annual motion of the Sun, and the effect of the annual apparent motion of the Sun on the initial oscillation of the Subuh prayer time. Apart from that, another thing done in the literature review was to look for the influence of the earth-sun distance on the oscillations of the dawn prayer time. The results showed that there were similarities between the oscillations of the annual apparent motion of the Sun and the oscillations of the dawn prayer time in the city of Pontianak. However, there is a time difference with an average of 41 days between the oscillation of the Sun's annual apparent motion and the oscillation of the time of the Subuh prayer. The results of the Study also show that the distance from the Earth to the Sun (aphelion and perihelion) affects the initial oscillation of the dawn prayer time. When the Earth is at the aphelion point, the time for the Subuh prayer falls later than usual. Meanwhile, when the Earth is at perihelion, the time for the dawn prayer falls faster than usual.
Microzonation of Landslide Potential Areas Using the Microtremor Method in the North Bengkulu - Lebong Regency Ardika Pratama Panjaitan; Ronni Saragih; Anggiat Hutahuruk; Suhendra Suhendra
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.14957

Abstract

The road crosses the North Bengkulu district to the Lebong district is one of the areas where landslides frequently occur in Bengkulu province. The occurrence of landslides can be caused by high rainfall, steep hillsides, high levels of soil vulnerability, and others. This study aims to map landslide-prone areas build on indicators of the natural frequency value (f0), the amplification value (A0), and the soil vulnerability value (Kg). Measurements from this study used the PASI Mod Gemini 2 Sn-1405 seismometer for ± 30 minutes at 25 measurement points. Geopsy software is used for microtremor data processing to obtain the H/V curve. The results obtained are dominant frequency values between 1.3 – 7.6 Hz, amplification factor values between 1.6 – 6.93, and seismic vulnerability index values 0,5 – 8. After getting the values of these parameters, a distribution map is made based on the values of each parameter, making distribution map using surfer software by merging the values of each parameter and the coordinates of the research location points. Based on the values of these parameters it can be concluded that the areas that have the potential for landslides are in the area of points T1, T6, and T25.
Briket Sabut Kelapa (Cocos nucifera L.) sebagai Bahan Bakar Alternatif Berbasis Sumber Daya Alam Lokal/Coconut (Cocos nucifera L.) Coir Briquettes as an Alternative Fuel Based on Local Natural Resources Yelfira Sari; Putri Ade Rahma Yulis
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.15337

Abstract

One of the practical and efficient products of biomass processing is briquettes. Briquettes are densified products in the form of cubic, prism, or cylindrical shapes. One of the biomass produced from abundant agricultural waste in Riau Province is coconut coir. This is because Riau Province is one of the largest coconut-producing regions in Indonesia. The utilization of coconut coir waste is currently still limited to crafts, fuel, and planting media. This study aims to produce briquettes from a waste of old coconut coir and young coconut coir with the stages of the research process including cleaning, drying, grinding, adding adhesive, and densification. The resulting briquettes were then subjected to laboratory tests to determine the physical characteristics of the briquettes based on SNI No. 1/6235/2000 and structural characteristics using SEM and TG/DTG. The results showed that laboratory tests for old coconut coir briquettes and young coconut coir based on water content were 28.11% and 29.72%; based on ash content are 1.59% and 2.21%; based on the carbon content are 25.10% and 24.94%, and the heating value is 3019.54 cal/g and 3137.03 cal/g. For SEM analysis, the surface morphology of the briquettes looked smooth and there was no fragmentation indicating that the biomass was perfectly bonded with the binder used. Meanwhile, in the TG/DTG analysis, the results showed that there had been a mass decrease of around 90% for old coconut coir briquettes and 78% for young coconut coir briquettes at a temperature of around 450oC
Physical Test Results of Used Cooking Oil Using Mangrove Activated Carbon Ratni Sirait; Masthura Masthura; Wulandari Armaya Sembiring
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.13960

Abstract

Cooking oil is a human need and has a close relationship with our physical health. Cooking oil is used repeatedly, the color and smell of the oil can change at high temperatures. In this study, used cooking oil can be reused by using adsorbents and materials used for mangrove-activated carbon. The purpose of this study was to determine the test results of used cooking oil before and after the adsorbent. This experiment uses the adsorption method with activation temperature variations of 500℃, 600℃, and 700℃. There are several test parameters, namely Odor, Color, and Moisture Content. The test results show the quality of used cooking oil at an activation temperature of 500℃ obtained Normal Odor, Color: Red 8.1, Yellow 14.0 and Blue 4.8, Water Content 0.07% according to SNI 7709.2019.
Testing the Characteristics of the Dose Calibrator Radiation Measurement Tool using Technetium-99m and Cobalt-57 at the Nuclear Medicine Installation at RSUD A. W. Sjahranie Samarinda Fahira Mutya Mutmainna; Retno Zurma; Pratiwi Sri Wardani; Erlinda Ratnasari Putri
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.15439

Abstract

A dose Calibrator is one of the dosimeters used to measure radionuclide activity before being given to patients. In order to function as a radiation dosimeter, the dose calibrator must have several good dosimeter properties, such as precision and stability. To test the dose calibrator, a source used by the hospital is required. The dose calibrator used in Instalasi Kedokteran Nuklir RSUD A. W. Sjahranie Samarinda is Capintec 25R. Two of the isotopes are widely used in nuclear medicine, namely Tc-99m and Co-57. The first step of this research was the elution performed by radiopharmaceuticals, then measured background activity. Then, Tc-99m and Co-57 activity were measured. Then, Tc-99m and Co-57 activity were measured for precision and stability tests, finally, graphs were made and evaluated. Based on the research results on the precision test, it was found that the measurement results for the Tc-99m source were obtained at 0.305%, while the result for measuring the activity of the standard Co-57 source was obtained at 0.307%. In the stability test, the result of measuring the Tc-99m source obtained a value of 0.563%, while the result of measuring the activity of the standard Co-57 source obtained a value of 0.437%. It can be concluded that the Capintec CRC 25R in RSUD A. W. Sjahranie Samarinda has good characteristics and performance so the measurement results can be trusted.
Automatic Watering of Red Ginger Plants Based on Telegram Using ESP8266 Nodemcu Humairoh Ratu Ayu; Dwina Nurizky Syahputri; Arif Surtono; Gurum Ahmad Pauzi; Amir Supriyanto
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.15561

Abstract

The design of an automatic watering tool for telegram-based red ginger plants has been realized using nodemcu esp8266. This study aims to create an automatic plant watering system using the YL-69 sensor and monitor the water supply in the reservoir using an ultrasonic sensor that can be monitored using Telegram application. This tool is assembled with various components such as nodemcu ESP8266 as a microcontroller, YL-69 sensor to detect soil moisture, ultrasonic sensor functions as a water level detector, water pump, and 16×2 LCD. The system works when the sensor reads soil moisture in red ginger plants> 60% then the pump turns off and if <60% then the pump turns on. Based on the results of the study, the tool can run well as indicated by the average accuracy of the YL-69 sensor of 98.61% and the water pump can turn on and off according to soil moisture conditions. In addition, the Telegram application can control and monitor watering either manually with the command /Humidity to check soil moisture, /Distance to monitor the water level in the reservoir, /PumpON to turn on the pump, /PumpOFF to turn off the pump or automatically
Identification of Landslide-Prone Areas Using the Horizontal to Vertical Spectral Ratio (HVSR) Method and the GIS Approach in Semakai District, Tanggamus Regency, Lampung Province Denta Winardi Setiawan; Nandi Haerudin; Bagus Sapto; Muhammad Sarkowi; Sandri Erfani
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.15017

Abstract

Landslides are one of the natural disasters that frequently occur in Indonesia and can result in loss of life, property, and environmental damage. Semaka Subdistrict, Tanggamus Regency, Lampung Province, is located in a landslide-prone area. The aim of this research is to analyze the geological characteristics and soil layer dynamics for landslide mitigation in the Semaka area. This study uses a scoring method based on three parameters: slope inclination, sediment thickness, and peak ground acceleration (PGA), to determine site class and create a landslide-prone zone map in the Semaka region. Microtremor data is analyzed using the Horizontal to Vertical Spectrum Ratio (HVSR) method. The obtained data represents ground vibrations as a function of time, with a dominant frequency range in the Semaka area between 2.18 and 13.48 Hz and sediment thickness ranging from 10 to 80 meters. The maximum PGA values range from 100 to 600 gal. The seismic sources used in the PGA map are from the subduction zone and Semangko Fault. Based on the slope values, geological factors such as sediment thickness, and PGA values, the villages of Sedayu and Sukaraja are identified as the areas most susceptible to landslides. The findings of this research are expected to enhance landslide control measures in the Semaka region.
Effect of Nylon Membrane Thickness on the Value of Sound Transmission Loss as an Alternative Insulation Material Wenny Maulina; Totok Wicaksono; Agung Tjahjo Nugroho
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.12810

Abstract

Measurements of sound transmission loss have been successfully carried out on various thicknesses of nylon membrane as an absorbing material. Nylon membrane were prepared using hydrogen chloride (HCl) and acetyl aceton in the casting solution by phase inversion methods. Nylon membrane with different thickness used in this reseach were 1 mm, 2 mm, 3 mm, 4 mm, and 5 mm. Measurement of sound transmission loss was carried out using a reverberation chamber with sound frequencies of 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz. The results show that, with the increase of thickness of nylon membrane, sound transmission loss of nylon membran was improved. The sound transmission loss of nylon membrane with thickness of 4 mm is the best, whose sound trasnmission loss was up to 46.39 dB at 4000 Hz. This nylon membrane is suitable for lightweight sound barriers and is promising and worthy of further study.
Verification of Brachytherapy Sources Against Ir-192 HDR Using Well Type Ionization Detectors at Universitas Andalas Hospital Ramacos Fardela; Rika Analia; Atika Maulida; Suci Ramda Rena; Fiqi Diyona; Dedi Mardiansyah
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v20i2.16727

Abstract

The Radiotherapy Unit at Andalas University Hospital (Unand Hospital), Padang City, has a brachytherapy facility with multichannel indexer technology of High Dose Rate on the Remote after Loading System type MicroSelectron HDR and has 6 channels. The radioactive source used is Iridium-192 or Ir-192, with an initial activity of about 12 Ci. This study uses a well-type chamber ionization detector to verify the brachytherapy source against HDR Ir-192. The well-type chamber detector measures the radiation dose given to the patient during the brachytherapy procedure. This study uses detectors to measure radiation dose at several points around the source. The study was conducted by verifying the activity of the radiation source in Ir-192 brachytherapy using a voltage of 200 V and 400 V. It was regulated using an electrometer connected to a detector. The results show that the well-type chamber detector could accurately verify the source of brachytherapy. In addition, the measured activity values are in accordance with those permitted in standardization in brachytherapy, which is around 10 to 12 GBq. Therefore, well-type chamber ionization detectors can effectively verify brachytherapy sources. Thus, proper radiation source verification is paramount to ensure patient safety and treatment effectiveness

Page 1 of 1 | Total Record : 9

 1 

Filter by Year

2023 2023


Reset
Filter By Issues
All Issue Vol 20, No 3 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 2 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 20, No 1 (2023): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 3 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 2 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 1 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 18, No 2 (2021): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 18, No 1 (2021): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 17, No 2 (2020): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 17, No 1 (2020): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 1, No 1 (2019): Jurnal Fisika Flux Edisi Khusus Januari 2019 Vol 16, No 2 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 16, No 1 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 15, No 1 (2018): Jurnal Fisika FLUX Edisi Februari 2018 Vol 15, No 2 (2018): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 15, No 1 (2018): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 14, No 2 (2017): Jurnal Fisika FLUX Edisi Agustus 2017 Vol 14, No 1 (2017): Jurnal Fisika FLUX Edisi Februari 2017 Vol 14, No 2 (2017): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 14, No 1 (2017): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 13, No 2 (2016): Jurnal Fisika FLUX Edisi Agustus 2016 Vol 13, No 2 (2016): Jurnal Fisika FLUX Edisi Agustus 2016 Vol 13, No 1 (2016): Jurnal Fisika FLUX Edisi Februari 2016 Vol 13, No 1 (2016): Jurnal Fisika FLUX Edisi Februari 2016 Vol 12, No 2 (2015): Jurnal Fisika FLUX edisi Agustus 2015 Vol 12, No 2 (2015): Jurnal Fisika FLUX edisi Agustus 2015 Vol 12, No 1 (2015): Jurnal Fisika FLUX Edisi Februari 2015 Vol 12, No 1 (2015): Jurnal Fisika FLUX Edisi Februari 2015 Vol 11, No 2 (2014): Jurnal Fisika FLUX Edisi Agustus 2014 Vol 11, No 2 (2014): Jurnal Fisika FLUX Edisi Agustus 2014 Vol 11, No 1 (2014): Jurnal Fisika FLUX Edisi Februari 2014 Vol 11, No 1 (2014): Jurnal Fisika FLUX Edisi Februari 2014 Vol 10, No 2 (2013): Jurnal Fisika FLUX Edisi Agustus 2013 Vol 10, No 2 (2013): Jurnal Fisika FLUX Edisi Agustus 2013 Vol 10, No 1 (2013): Jurnal Fisika FLUX Edisi Februari 2013 Vol 10, No 1 (2013): Jurnal Fisika FLUX Edisi Februari 2013 Vol 9, No 2 (2012): Jurnal Fisika FLUX Edisi Agustus 2012 Vol 9, No 1 (2012): Jurnal Fisika Flux Edisi Februari 2012 Vol 9, No 1 (2012): Jurnal Fisika Flux Edisi Februari 2012 Vol 8, No 2 (2011): Jurnal Fisika Flux Edisi Agustus 2011 Vol 8, No 2 (2011): Jurnal Fisika Flux Edisi Agustus 2011 Vol 8, No 1 (2011): Jurnal Fisika Flux Edisi Februari 2011 Vol 8, No 1 (2011): Jurnal Fisika Flux Edisi Februari 2011 Vol 7, No 2 (2010): Jurnal Fisika Flux Edisi Agustus 2010 Vol 7, No 2 (2010): Jurnal Fisika Flux Edisi Agustus 2010 Vol 7, No 1 (2010): Jurnal Fisika Flux Edisi Februari 2010 Vol 7, No 1 (2010): Jurnal Fisika Flux Edisi Februari 2010 Vol 6, No 2 (2009): Jurnal Fisika Flux Edisi Agustus 2009 Vol 6, No 2 (2009): Jurnal Fisika Flux Edisi Agustus 2009 Vol 6, No 1 (2009): Jurnal Fisika Flux Edisi Februari 2009 Vol 6, No 1 (2009): Jurnal Fisika Flux Edisi Februari 2009 Vol 5, No 2 (2008): Jurnal Fisika Flux Edisi Agustus 2008 Vol 5, No 2 (2008): Jurnal Fisika Flux Edisi Agustus 2008 More Issue