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Newton-Maxwell Journal of Physics
Published by Universitas Bengkulu
ISSN : -     EISSN : 27755894     DOI : 10.33369
Core Subject : Science, Engineering,
Astronomy Earth & Planetary Sciences Electrical & Electronics Engineering Mechanical Engineering Physics
Newton-Maxwell Journal of Physics is a scientific journal published by UNIB Press and managed by the Department of Physics, FMIPA University, Bengkulu, with ISSN Number: 2775-5894. This journal is published twice a year, in April and October, as a forum for lecturers, researchers, and students to publish their work. The scope of this scientific journal covers the field of physics in general, such as materials, theory and instrumentation, geophysics, acoustics, computer science, physics and its applications, and other relevant areas.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 58 Documents
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Analisis Pengaruh Variabel Penduga Cuaca Ekstrem di Kota Bengkulu dengan Menggunakan Statistical Product and Service Solutions (SPSS) Simbolon, Mikael
Newton-Maxwell Journal of Physics Vol. 4 No. 2: Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i2.24926

Abstract

The Bengkulu City area often experiences extreme weather with the potential for flooding and affects various types of human activities. This study aims to determine the effect of extreme weather predictor variables in Bengkulu City by using Statistical Product and Service Solutions (SPSS). Extreme weather indicators are  reviewed  based  on  rainfall  with  estimating  variables  in  the  form  of  air pressure, humidity, air temperature, and wind speed, for 5 years (2017-2021) obtained from the BMKG Station on Baai Island, Bengkulu City. Data processing using SPSS method. Data analysis was carried out statistically and descriptively. Based on the results of the study, the correlation between the estimator variables on extreme rainfall is quite good with r = 0.661, and the error value (RMSE) is 27,124. Furthermore, the homogeneity test between extreme rainfall indicators and extreme weather estimators   includes   air   pressure, air   temperature, wind   speed,  and   air   humidity,   showing homogeneity in 2019. This indicates the predictor variable has the same direction to extreme rainfall, where the error value is obtained tends to be relatively small. The estimator variables, namely air pressure and humidity, have a significant relationship with extreme rainfall. Predictions using data (2017-2021) show that in 2022, extreme rainfall events will occur for a relatively long time, namely in January, March, May, June, July, August, October, and December. The most extreme rainfall intensity occurs in January
Identifikasi Kualitas Air Laut di Perairan Pantai Depok Desa Harapan Kabupaten Bengkulu Tengah Susanti, Yuli
Newton-Maxwell Journal of Physics Vol. 4 No. 2: Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i2.25185

Abstract

Pantai Depok yang terletak di desa Harapan di Kabupaten Bengkulu tengah memiliki banyak potensi yang dapat dikembangkan diantaranya perikanan, budidaya tambak dan pariwisata.  Penelitian ini bertujuan untuk mengetahui kualitas air laut di perairan Pantai Depok, Desa Harapan Kabupaten Bengkulu Tengah. Metode yang digunakan adalah pengukuran langsung dengan parameter kecepatan arus, salinitas, suhu, pH dan kekeruhan. Hasil yang didapatkan pada penelitian ini yaitu, kecepatan arus rata-rata adalah 0,26 m/s, salinitas 29,01 ‰, suhu 29,19 °C, pH 7,58 dan kekeruhan 6,07 NTU. Kondisi surut kecepatan arus 0,22 m/s, salinitas 29,96 ‰, suhu 29,41 °C, pH 7,69 dan kekeruhan 6,47 NTU. Berdasarkan baku mutu biota laut menurut KEPMEN LH No. 51 Tahun 2004, hasil pengukuran kekeruhan dan salinitas menunjukkan tidak memenuhi baku mutu biota laut. Perhitungan didasarkan pada persamaan indeks pencemaran dan nilai indeks pencemaran tertinggi terdapat pada parameter kekeruhan dan pH. Nilai parameter kekeruhan berkisar antara 1,77 NTU hingga 2,69 NTU pada saat pasang dan dari 1,83 NTU hingga 2,34 NTU pada saat surut. Nilai Indeks Pencemaran pH berkisar antara 1,09 hingga 1,11 pada saat pasang dan dari 1,11 hingga 1,14 pada saat surut. Berdasarkan klasifikasi indeks pencemaran, parameter pH dan kekeruhan masuk dalam kategori tercemar ringan.
Studi Material Organik batuan Induk Sebagai Sumber Batuan Hidrokarbon Lapangan 'X' Berdasarkan Data Geokimia Harsano Jayadi; Windi Lestari; Icha Untari Meidji; Widi Atmoko
Newton-Maxwell Journal of Physics Vol. 4 No. 2: Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i2.28371

Abstract

The need for oil and gas has led to increased exploration to produce hydrocarbons in various basins and discover new reserves. This was also done in the Kutai basin on the eastern island of Kalimantan using a quantitative correlation between geophysical logs and rock core data and qualitative analysis by analyzing geochemical data derived from the host rock. To determine the characteristics of the hydrocarbon source rock in the three test wells, three types were analyzed, namely organic material richness, organic material type, and maturity level. For the Maau-1, Wahau-1, and Tengkawang-1 test wells, the organic material content has an excellent type to become source rock. The three wells are of medium-special hydrocarbon potential in organic material, making them very likely to produce oil and gas. As for the nature of the material content, the three wells have a mature level of the source rock, making them very potential as the  very good source rock. The need for oil and gas has led to increased exploration to produce hydrocarbons in various basins and discover new reserves. This was also done in the Kutai basin on the eastern island of Kalimantan using a quantitative correlation between geophysical logs and rock core data and qualitative analysis by analyzing geochemical data derived from the host rock. To determine the characteristics of the hydrocarbon source rock in the three test wells, three types were analyzed, namely organic material richness, organic material type, and maturity level. For the Maau-1, Wahau-1, and Tengkawang-1 test wells, the organic material content has an excellent type to become source rock. In terms of organic matter, all three wells have medium-special hydrocarbon potential and, therefore, high potential to produce oil and gas. As for the nature of the material content, the three wells have a mature level of the source rock, making them very potential as the very good source rock.  
Pemanfaatan Data Radar Cuaca untuk Membuat Peringatan Dini Cuaca secara Spasial Menggunakan Metode K-Means Cluster anjasman anjasman
Newton-Maxwell Journal of Physics Vol. 4 No. 2: Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i2.29588

Abstract

Pentingnya informasi cuaca untuk masyarakat tidak akan pernah lepas dari perkembangan teknologi yang ada. Semakin canggih teknologi, maka keadaan cuaca tersebut dapat diketahui, dipantau dengan cepat, tepat dan akurat. Untuk mengetahui dan memantau keadaan cuaca tersebut menjadi suatu informasi, maka diperlukan suatu cara dan metode untuk mengolahnya hingga menjadi suatu informasi yang berguna bagi masyarakat.Adapun tujuan dari penelitian ini adalah untuk membuat peringatan dini cuaca secara spasial dengan memanfaatkan data radar cuaca gematronik Bengkulu, yang mana data tersebut akan diolah menggunakan metode pengelompokkan K-Means Cluster sehingga menghasilkan suatu informasi peringatan dini cuaca secara spasial untuk menentukan daerah-daerah yang memiliki indeks tingkat kemungkinan banjir. Berdasarkan hasil penelitian, waktu yang dibutuhkan untuk mengelompokkan 2 kelompok tingkat kemungkinan adalah singkat (2 iterasi). Tingkat kemungkinan rendah memiliki cluster berwarna hijau dengan nilai 1 dan tingkat kemungkinan sedang-tinggi dengan nilai 2 berwarna jingga dan dapat dipetakan secara spasial pada batas administrasi kecamatan sehingga menjadi informasi peringatan dini cuaca.
Analysis of Flood Vulnerability Levels Using Overlay Method with System-Based Scoring Geographical Information (Case Study: District Tangerang) Itah Safitri; Yayat Ruhiat; asep saefullah
Newton-Maxwell Journal of Physics Vol. 4 No. 2: Oktober 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v4i2.30354

Abstract

This research aims to determine the factors of flood disasters in Tangerang district, which consist of land height, slope, soil type, land use, river density, and rainfall, and to find out the results of flood mapping in Tangerang district. The research method used is the overlay method with scoring. This research uses secondary data consisting of rainfall data for the period 2022-2020, shp Admin data from Tangerang district, watershed data throughout Indonesia, OSM data throughout Indonesia, slope data throughout Indonesia, DEM data throughout Indonesia, DSMW data throughout Indonesia, 2017 landcover data. Data were processed using Microsoft Excel software, Arc GIS 10.8, and QGIS 3.26.0. Based on the results obtained, the flood disaster factors in Tangerang district that are very dominant in influencing the occurrence of floods in Tangerang district are soil type and slope. Meanwhile, the results of flood mapping in Tangerang district are categorized into three classes: not vulnerable, moderately vulnerable, and fragile. Four sub-districts in Tangerang Regency are not prone to flood disasters, including Panongan, Legok, Cisauk, and Pagedangan sub-districts. Meanwhile, the Tangerang district, which is categorized as quite vulnerable, consists of 9 sub-districts, namely the sub-districts of Kelapa Dua, Curug, Cikupa, Tigaraksa, Jambe, Solear, Jayanti, Cisoka, Balaraja. Meanwhile, there are 16 sub-districts in Tangerang Regency which are categorized as very vulnerable, namely Pasar Kemis, Sindang Jaya, Kresek, Gunung Kaler, Sukamulya, Sepatan, Sepatan Timur, Rajeg, Kemiri, Kronjo, Mekar Baru, Mauk, Sukadiri, Pakuhaji, Teluk Naga, Kosambi districts.
Impact of ENSO on Cloud Distribution and Rainfall Variability in Tangerang Regency Susiliawati Susiliawati; asep saefullah; Yayat Ruhiat
Newton-Maxwell Journal of Physics Vol. 5 No. 2: Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v5i2.33177

Abstract

A type of climate variation in the Pacific Ocean known as El Niño Southern Oscillation (ENSO) is defined by an increase in sea surface temperature (SST) in the Central and Eastern equatorial areas, which affects the amount of rainfall that falls and increases. In Indonesia, the rainy season typically persists from October to March, whereas the dry season persists from April to September.  Research on the influence of ENSO on rainfall has been carried out in several areas, but has not been carried out in the Tangerang area. This study aims to ascertain how the ENSO phenomena affect rainfall fluctuations and cloud distribution in the Regency of Tangerang. The secondary data, which includes information on rainfall, cloud cover, wind direction, and speed, was acquired from BMKG Meteorology Budiarto. In addition, data from the Australian Bureau of Meteorology (BOM) website's Southern Oscillation Index (SOI) was used. Surface weather analysis and Pearson correlation analysis are the data analysis techniques used. The results presented that based on surface weather study, ENSO events had a consequence on cloud distribution in Tangerang Regency. The clouds lead when the ENSO phenomenon occurs, namely Cumulus and Nimbostratus clouds with a 4-8 octa cloud cover. Meanwhile, the correlation test results show that ENSO influences seasonal and annual rainfall variations in the district of Tangerang.  The largest correlation between SOI and annual rainfall occurred in 2015 with a correlation value of r-0.84 (very strong). Meanwhile, the greatest correlation between SOI and seasonal rainfall occurred in July-September with a correlation value of r=0.67 (strong).
Structure and Photo-response Properties of FZO/ITO Thin Film Amrina Mustaqim -; Yeli Krisdayanti Lature; Mohamad Samsul Anrokhi; Koko Friansa; Retno Maharsi; Eka Nurfani
Newton-Maxwell Journal of Physics Vol. 5 No. 1: April 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v5i1.33178

Abstract

The structure and photo-response properties of ZnO:Fe/ITO thin film synthesized using  a pyrolysis method were studied in this work. ZnO:Fe/ITO thin film referred to as FZO/ITO was characterized using the X-ray diffraction (XRD) technique and current-voltage (I-V) measurements. The XRD analysis showed that the detected peaks at 30.23°, 35.15°, 37.36°, 45.18°, and 50.54° belonged to the ITO cubic phase. The I-V analyses showed that the sample had the saturation current, Schottky barrier, and sensitivity of 16.24 µA, 0.4771, and 0,90 µA respectively. The FZO/ITO gave a good response toward the light.
Analisis Molekular Docking In Silico Terhadap Bakteri Mycobacterium tubercolosis pada Daun Tanaman Herbal Eukaliptus Lemon (Corymbia Citriodora) Fiona Fiona; Jesi Pebralia; Tika Restianingsih; Frincess Yeny Sirait; Irene Regina
Newton-Maxwell Journal of Physics Vol. 5 No. 1: April 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v5i1.33265

Abstract

Penyakit tuberkulosis disebabkan oleh bakteri Mycobacterium tuberculosis yang menyerang organ tubuh manusia. Tujuan dari penelitian ini adalah untuk menemukan senyawa dari tanaman Eukaliptus lemon, yaitu Linalool, Isopulegol, Farnesan, dan Citronellol yang paling berpotensi sebagai obat tuberculosis melalui metode molecular docking. Pada penelitian ini digunakan 2 jenis protein yaitu 4KM2 dan 4KL9 yang ditambatkan dengan senyawa Eukaliptus lemon. Hasil docking dievaluasi berdasarkan parameter dari nilai konstanta inhibisi (ki) dan nilai energi afinitas (ΔG). Senyawa Farnesan menunjukkan hasil terbaik dengan energi afinitas (ΔG) terendah, yaitu 5,3 kcal/mol, dan ki sebesar 0,9144 µM. Hasil ini menunjukan Farnesan memiliki potensi sebagai kandidat resistensi obat untuk menyembuhkan penyakit tuberculosis.
Evaluation of Cu, Fe, and Pb for Fast Neutron Shielding using Monte Carlo PHITS Simulation Sitti Yani
Newton-Maxwell Journal of Physics Vol. 5 No. 1: April 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v5i1.33289

Abstract

Developing effective neutron shielding materials for applications like muon tomography requires understanding the interaction of neutrons with different materials. This study investigates the effectiveness of heavy metals (Cu, Fe, and Pb) as neutron shields using Monte Carlo PHITS simulations with fast neutrons (0.1, 0.5, and 1 MeV). Simulation results show that the intensity of transmitted neutrons decreases with increasing material thickness and atomic number (Pb > Fe > Cu). How far a particle travels before stopping is determined by two factors: its initial neutron energy and how likely it is to interact with the material it's passing through. These findings provide valuable insights into designing optimal neutron shielding materials for various applications.
Kajian Pengeringan pada Pengering Tipe Rak dengan Konveksi Panas dari Pipa yang Dialiri Air Panas Geothermal Yedi Gunawan; Yazid Ismi Intara; Bosman Sidebang; Ulfah Anis
Newton-Maxwell Journal of Physics Vol. 5 No. 1: April 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/nmj.v5i1.33301

Abstract

This research aims to obtain the temperature performance of heat convection from hot water flow in pipes in the drying chamber during the drying process. This research method descriptively examines the drying function and the hot air flow process in the drying system. The results obtained from the research show that the average temperature in the drying room is 37oC while the temperature outside the dryer (environmental temperature) is 22oC. To dry 2 mm thick cassava slices from an ingredient weight of 23 g to 8 g, it takes 8-10 hours. The longer the drying time, the lower the moisture ratio value. An increase in temperature affects a decrease in the moisture ratio in geothermal hot water flow dryer. The decrease in the moisture ratio value was influenced by the decrease in the water content of the material during the drying process. The distribution of temperature movements that occur in the drying room at the beginning of the drying process where the room temperature moves turbulensitly from 30.8 - 35.1oC. During the drying process, the movement of heat distribution shows the active phenomenon of a convection heat source from the side of the drying chamber which is a spiral-shaped heating design around the drying chamber. The constant temperature is 36 – 38oC which is the hottest temperature that is almost uniform in the drying room. The use of hot water energy from geothermal hot springs can be an alternative continuous and hygienic drying process

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