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Elfi Yuliza
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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 5 Documents
 1 
Search results for , issue "Vol. 2 No. 2: Oktober 2021" : 5 Documents clear
Kajian Kualitas Air dan Indeks Pencemaran Di Perairan Kampung Sejahtera Pulau Baai Kota Bengkulu Yulisah Dwi Putri; Elfi Yuliza; Lizalidiawati Lizalidiawati
Newton-Maxwell Journal of Physics Vol. 2 No. 2: Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1011.291 KB) | DOI: 10.33369/nmj.v2i2.17597

Abstract

Water quality is one of the important factors supporting the growth of mangrove ecosystems. The activites of Kampung Sejahtera’s people were allegedly polluted the waters and disturbing the mangrove ecosystem. This study aimed  to identify  the status of water quality and pollution index in the waters of Kampung Sejahtera, Bengkulu City. The method used is a direct measurement at the research location which was carried out at 9 location points, 5 points representing the waters near the settlements of the prosperous village residents, and 4 location points representing the waters near the mangrove ecosystem. Then the results are compared with the Decree of the State Minister of the Environment No. 51 of 2004 concerning seawater quality standards for marine biota and to determine the status of water quality by using the pollution index method based on the Decree of the State Minister of the Environment No. 115 of 2003. The results of this study indicate that the temperature parameter, salinity, and pH met the quality standard while the TSS and DO parameters did not fulfill the quality standard. Based on the results of the calculation of the pollution index that the waters of Kampung Sejahtera are in the category of good condition to lightly pollute.
Visualisasi Rapat Peluang Posisi Elektron terhadap Sudut pada Atom Deuterium Siti Afidatul Karomah; Arihna Roihatul Jannah; Naila Rohmatal Aini; Rofi Zumarotin; Winungsih Winungsih; Nani Sunarmi
Newton-Maxwell Journal of Physics Vol. 2 No. 2: Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (909.34 KB) | DOI: 10.33369/nmj.v2i2.17631

Abstract

Deuterium merupakan salah satu isotop hidrogen yang memiliki satu proton dan neutron didalam inti dan satu elektron dikulit atom. Persamaan schrodinger atom deuterium ditinjau dalam koordinat bola untuk memproleh penyelesaian fungsi gelombang. Penelitian ini bertujuan untuk  menentukan fungsi gelombang bagian sudut untuk atom deuterium dan memvisualisasikan kebergantungan rapat peluang posisi elektron terhadap sudut pada atom dengan Matlab. Penyelesaian fungsi gelombang sudut diperoleh dengan memisahkan persamaan schrodingger kedalam fungsi bagian radial dan bagian sudut  sehingga diperoleh penyelesaian  persamaan schrodingger orde dua bagian sudut yang memiliki solusi Polinomial Legendre jenis pertama serta melakukan visualisasi mengunakan Matlab. Hasil analisis menunjukan kebergantungan rapat peluang posisi elektron hanya dipengaruhi oleh bagian sudut zenithal dan tidak dipengaruhi oleh bagian sudut  azimuthal. 
Sintesis dan Karakterisasi Hidrogel PVA/Alginat Mengandung Ekstrak Lada sebagai Pembalut Luka Antibakteri Fadillah Ramadhani; Lizia Miratsi; Zalva Humaeroh; Fitri Afriani
Newton-Maxwell Journal of Physics Vol. 2 No. 2: Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.777 KB) | DOI: 10.33369/nmj.v2i2.17752

Abstract

Wound dressings act as wound protectors as well as drug delivery for wound healing. This article develops a PVA/alginate-based wound dressing material added with pepper extract to obtain its antibacterial properties. The sample preparation process consisted of several stages: the preparation of pepper extract by maceration method with ethanol solvent, preparation of PVA/Alginate hydrogel and addition of pepper extract, and testing. Antibacterial test using the paper disc method with the pathogen Staphyloccocus aureus showed that the extract had powerful antibacterial properties with an inhibition zone of about 22 m. Based on the FTIR analysis, it is known that the FTIR transmittance pattern of the PVA/alginate composite added with pepper is related to its constituent functional groups. The highest degree of swelling of the hydrogels prepared in this study was 188%.
Pemetaan Sebaran Indeks Pencemaran Air di Perairan Muara Sungai Jenggalu Kota Bengkulu Vedina Delima Purba; Liza Lidiawati; Nanang Sugianto
Newton-Maxwell Journal of Physics Vol. 2 No. 2: Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1117.489 KB) | DOI: 10.33369/nmj.v2i2.17757

Abstract

Muara Sungai Jenggalu merupakan salah satu muara sungai di Kota Bengkulu yang mengalami pencemaran. Penelitian ini mengidentifikasi kadar kualitas air dan indeks pencemaran di Muara Sungai Jenggalu berdasarkan parameter fisika dan kimia. Data penelitian diperoleh berdasarkan pengukuran secara langsung, analisis laboratorium dan perhitungan indeks pencemaran. Pengukuran dilakukan pada 9 titik yang tersebar di Muara Sungai Jenggalu. Data hasil penelitian ini dibandingkan dengan baku mutu PP 82 tahun 2001 tentang pengelolaan kualitas air dan pengendalian pencemaran. Kemudian perhitungan nilai indeks pencemaran untuk mengetahui indikasi pencemaran pada Muara Sungai Jenggalu berdasarkan Kepmen LH Nomor 115 Tahun 2003. Hasil pengukuran kadar salinitas tertinggi sebesar 26,8‰ dan terendah 12,8‰, kadar DO tertinggi sebesar 6,3 mg/l dan terendah sebesar 5 mg/l, kekeruhan tertinggi 5,4 NTU dan terendah sebesar 0,9 NTU, Kadar TDS tertinggi sebesar 872 mg/l dan terendah sebesar 743 mg/l, kadar pH tertinggi sebesar 7,5 dan terendah 7,2 dan suhu tertinggi sebesar 30,7°C dan terendah sebesar 29,1°C. Selain itu nilai kecepatan arus tertinggi sebesar 0.25 m/s dititik 2 dan terendah sebesar 0,1 m/s dititik 7dan titik 8 dan debit air sebesar 139,8 m³/s. Hasil dari penelitian ini menunjukkan nilai indeks pencemaran di Muara Sungai Jenggalu sebesar 1,28 dengan kondisi tercemar ringan.
CO2 Detection System in Mixed Gas using MQ-135 Sensor Salamah, Umi; Hidayah, Qonitatul; Kusuma, Damar Yoga
Newton-Maxwell Journal of Physics Vol. 2 No. 2: Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (560.228 KB) | DOI: 10.33369/nmj.v2i2.18730

Abstract

The increase in CO2 gas occurred very significantly due to the use of fossil fuels, industry, forest fires, volcanic eruptions and natural gas resulting in air pollution. The dangers of CO? gas for humans can cause headaches, sweating, blurred vision, tremors, and loss of consciousness after exposure for five to ten minutes. CO2 is a poisonous gas which is physically colorless and odorless. This characteristic causes many humans to be unaware of the existence of this gas, so that it is exposed and endangers health. Therefore we need a CO2 gas detection system. The difficulty that occurs in the detection of CO2 gas is when the gas is mixed with other gases that have similar material properties. In this research, a CO2 gas detection system is designed to detect the gas when it mixes with other gases using the MQ-135 sensor. The system that has been designed and built is then compared with a standard tool, namely the xm-7000 dragger. The test data analyzed using linear regression showed the results in accordance with 2the value of R = 0.9896 with the conversion equation y = 0.0389x-76.086. With these results provide new opportunities in testing CO2 on gas mixtures that are easier and cheaper.

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