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All Journal Jurnal Sains dan Pendidikan Fisika Komunikasi Fisika Indonesia Berkala Fisika Indonesia : Jurnal Ilmiah Fisika, Pembelajaran dan Aplikasinya Jurnal Fisika Unand Elkawnie JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Jurnal Redoks JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi Jurnal Kumparan Fisika Jurnal Fisika dan Terapannya EINSTEIN (E-JOURNAL) Jurnal Sains dan Teknologi
Masthura, Masthura
Universitas Islam Negeri Sumatera Utara, Medan, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Efektivitas Penurunan Kadar Fe Dan Mn Pada Air Sumur Gali Kelurahan Jati Utomo Kota Binjai Dengan Metode Filtrasi Rizki Qorina; Masthura Masthura; Ety Jumiati
Jurnal Redoks Vol. 8 No. 2 (2023): REDOKS JULI-DESEMBER
Publisher : Universitass PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/redoks.v8i2.13155

Abstract

Penelitian ini telah dilakukan untuk mengetahui penurunan kadar Fe dan Mn pada air sumur gali menggunakan bahan karbon aktif kulit pisang kepok aktivator HCl 5 M dan zeolit yang bertujuan untuk mendapatkan kualitas air bersih berdasarkan PERMENKES RI. No 2 Tahun 2023. Variasi komposisi karbon aktif kulit pisang kepok dan zeolit pada sampel A (25%:75%), sampel B (50%:50%) dan sampel C (75%:25%). Media pemfilteran menggunakan housing filter berukuran 10 inchi dengan tinggi 19,5 cm. Hasil penelitian menujukkan hahwa desain pemfilteran yang optimal yaitu pada sampel C dengan penurunan nilai kadar Fe sebesar 97,88% dan nilai kadar Mn sebesar 98,25% yang sesuai dengan standar mutu air bersih menurut PERMENKES RI No. 2 Tahun 2023.  
ANALISIS PENGARUH PENAMBAHAN VOLUME DAN LAMA FERMENTASI TERHADAP KELISTRIKAN BIOBATERAI SARI BUAH NENAS (ANANAS COMOSUS) Masthura Masthura; Nadilla Putri; Abdul Halim Daulay
JFT : Jurnal Fisika dan Terapannya Vol 8 No 2 (2021): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i2.22164

Abstract

The purpose of this research to analyze the effect of increasing the volume and fermentation time on the bio-battery electricity of pineapple juice. Bio-battery prototype design with acrylic size 12x5x7 consisting of 6 pair of Cu-Zn electrodes. The volume of solution used was 150 ml, 200 ml, and 250 ml. The pineapple juice solution was fermented for 3 days, 5 days, 7 days, 9 days, and 11 days. A pH meter is used to measure the acidity of the solution. Electrical measurements such as electric current and voltage with a digital multimeter. When the solution is fermented for 11 days, the maximum electrical value is obtained with a volume of 200 ml which was 4,84V; 14,58mA; and 70,57mW. In this study, increasing the volume of the solution did not have much effect on the electrical voltage. Pineapple juice bio-battery is used to turn on the red LED for 2 hours with a voltage drop of 0,01-0,04V. After reaction, the Copper was thickened due to the oxidation with the Zinc.
PENGARUH PENAMBAHAN ABU KULIT CACAO TERHADAP SIFAT MEKANIK DAN MORFOLOGI BATA MERAH Masthura Masthura; Ratni Sirait; Rosyidah Mardiyah Sagala
JISTech (Journal of Islamic Science and Technology) Vol 8, No 2 (2023)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v8i2.18410

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi abu kulit cacao terhadap parameter mekanik dan morfologi dalam pembuatan batu bata merah. Metode penelitian ini menggunakan eksprimen. Kuat tekan pada bata merah memiliki nilai minimum 29,73 kg/cm2, dan maksimum 243,82 kg/cm2, dengan melakukan pengujian morfologi menggunakan Scanning Electron Microscope (SEM) dengan bantuan software digimizer maka, nilai minimum sebesar 0,7985 m dan maksimum 2,4551 m. Bahan pembuatan bata merah yaitu tanah liat air dan abu kulit cacao, yang di bakar dengan memvariasikan suhu. Suhu pembakaran batu bata yang optimum pada suhu 1000oC dengan variasi abu kulit cacao 20%, penelitian ini sesuai dengan SNI 15-2094-2000.
IoT-based noise measuring tool with FC-04 sound sensor for polyurethane dampening materials Vicha Indriany; Masthura Masthura; Nazaruddin Nasution
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.33-40

Abstract

Increased noise caused by human and industrial activities can cause health problems, such as stress, affecting sleep quality, and having negative effects on long-term health, usually such as hearing problems, high blood pressure, and depression. This study aims to make a noise-measuring instrument, examine the comparison of the results of sound intensity level measurements, and examine the damping ability of polyurethane. The sensor used in this study is the FC-04 sound sensor which functions as a sound intensity level meter that works by changing the sound scale to an electrical quantity. The data that has been obtained is a comparison of the measurement results using the factory standard sound level meter (SLM) and an artificial noise measuring instrument which is analyzed using the calculation of the percent deviation. As for the measurement data of the damper material polyurethane before and after, analyzed using reduction effectiveness calculations. The results of measuring the sound intensity level using the factory standard SLM and an artificial noise meter obtained an average value of the sound intensity level of 72.67 dB and 67.77 dB. From the results of the two measuring instruments, the percentage deviation of the measuring instrument is 6.7% with minimum and maximum percentage deviation values of 3.1% and 11.7%. The results of the measurement of the reduction effectiveness value of the damper material polyurethane using factory standard SLM and artificial noise measurement tools of 14.7% and 14.8%.
Design of a coffee bean dryer prototype based on the internet of things Ardian Afandi; Masthura Masthura; Nazaruddin Nasution
Indonesian Physics Communication Vol 21, No 2 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.2.159-164

Abstract

Coffee is one of the plants that is widely cultivated in tropical countries such as Indonesia. Coffee plantation commodities at least contribute a lot to the Indonesian economy, which creates foreign exchange, farmer income, industrial raw materials, employment, and regional development. This research aims to design coffee bean dryer equipment using a heater as a heating element instead of sunlight for the process of drying coffee beans. When the temperature has reached 60°C, the heater will turn off briefly, and if the set time has not expired, the heater will always be alive. If the humidity does not decrease, the fan will fail. In this research, using experimental research procedures where each measurement is used effectively by each sensor so that the measurement results of each sensor are accurate. From the test results, it can be concluded that the initial weight before drying was 1000 grams, while the weight after drying was 880 grams.
Comparison of measuring the noise level of glass wool soundproofing material using a sound level meter and the KY-037 noise measuring instrument Indah Pratiwi Tanjung; Masthura Masthura; Nazaruddin Nasution
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.25-32

Abstract

The problem that people often face, both at home and in public places, is noise that disturbs concentration and comfort. Noise can be measured by sound level measurement, namely by measuring the intensity or loudness of sound in hertz and sound waves in decibels (dB). Then noise can be reduced by materials that can absorb sound, one of which is glass wool. The purpose of this research is to make a noise-measuring instrument, find out the effectiveness of damping materials, and compare the results of measuring noise levels. The measuring instrument for noise in this study is the sound level meter (SLM) using a KY-037 sound sensor programmed with Arduino Uno as a microcontroller. The results of noise measurements using a factory standard SLM and noise measurement tool KY-037 obtained an average factory standard SLM measurement of 72.23 dB and the average measurement of the KY-037 noise meter is 67.67 dB. From the measurement results with the two tools, the difference in comparison is 4.56 dB with a percent deviation of 6,33%. Then the results of testing the glasswool sound-dampening material with a comparison of the two measuring devices obtained that each sound intensity absorption was 17.9 – 28.5 dB and the effectiveness of the reduction was 21.8% – 34.9%.
Morphology test of activated charcoal from oil palm fronds with H2SO4 and NaOH activators Debby Marantika; Masthura Masthura; Ratni Sirait
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.59-62

Abstract

Activated charcoal has been investigated by utilizing oil palm fronds using the addition of H2SO4 and NaOH activators. The purpose of this study was to determine the microstructure of the effect of activated charcoal using H2SO4 and NaOH activator at a carbonization temperature of 500°C for 60 minutes. The method used in this research is a method with a quantitative approach. The characterization used was scanning electron microscopy to determine the surface morphology of activated charcoal. The results of the tests carried out for the H2SO4 and NaOH activators showed that the best results were found in the NaOH activator which had larger pores than the H2SO4 activator, with a particle diameter size range of 0.432 – 1.564 µm which was analyzed using software Digimizer.
Pengaruh Penambahan Abu Kulit Cacao terhadap Sifat Mekanik dan Morfologi Bata Merah Masthura Masthura; Ratni Sirait; Rosyidah Mardiyah Sagala
Jurnal Sains dan Teknologi Vol. 2 No. 2 (2023): Desember : Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/saintek.v2i2.280

Abstract

The purpose of this research to effect variations cacao peel ash to parameters mechanical and morphology in making red brick. This research method uses the experiment. The research of characterization compressive strength value a minimum of 29,73 kg/cm2 and maximum of 243,82 kg/cm2. The morphology structure testing with software digimizer a minimum of 0,7985 μm, and maximum of 2,4551 μm. The composition of mixing clay, water, and cacao peel ash by increasing the burning temperature of bricks show the optimum test parameters at the temperature 1000℃ with variation in cacao peel ash is 20% that has the met the standard SNI 15-2094-2000.
Pengaruh Variasi Ekstrak Gambir Dalam Pembuatan Tinta Spidol Whiteboard Ramah Lingkungan Hilwa Anisa; Masthura Masthura; Ratni Sirait
Jurnal Fisika Unand Vol 13 No 3 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.3.315-321.2024

Abstract

Gambir  memiiki  senyawa utama yaitu katekin (7% - 33%) dan  tanin  ( 22% -50%)  hingga gambir dapat  dijadikan  sebaga  zat warna pada  penyusunan  tinta spidol  whiteboard  ramah lingkungan  dengan nilai senyawa organik volatil  (VOC)  yang rendah .  Tujuan dari penelitian ini untuk  mencari  hasil tinta yang optimal  dengan  variasi  sampel  ekstrak gambir yaitu  A  (65% ), B ( 70% )  dan C ( 75%) .  Seluruh variasi di campur dengan 25% aquades, 5%  propylen glikol  dan 5% polietilen glikol (PEG)  menggunakan  alat  magnetic stirrer  diatas hot plate dengan waktu 30 menit,  kecepatan 1000 rpm  dan suhu 40 . Kemudian sampel diuji menggunakan  alat viskometer  ostwald , neraca  analitik  dan pH meter . Parameter uji berupa uji  pigmen dan uji  fisis  meliputi : nilai densitas, nilai viskositas dan pH . Penyusunan  tinta dikerjakan melalui  sejumlah proses  yaitu  bahan utam a  gambir  yang telah  dibersihkan menggunakan udara ,  penghalusan gambir dan pencampuran gambir dengan air panas 80  - 90 ,  penyaringan dan  pengendapan gambir  selama satu malam ,  pengkstrakan  gambir  dengan dimaserasi selama satu hari satu malam , pembuatan pigmen warna dan  pembuatan formula tinta . Hasil penelitian  mendapatkan nilai t optimum pada sampel A ( 75% )  yaitu memiliki nilai densitas 1,088 g/ , nilai viskositas 2,44 cP, nilai pH  8,27 dengan warna yang lebih pekat.              
Pengaruh Jumlah Plat Elektroda Pada Proses Elektrokoagulasi Terhadap Kualitas Air Sumur Gali di Kabupaten Rokan Hilir Riau Ramidin, Ramidin; Daulay, Abdul Halim; Masthura, Masthura
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 7, No 2 (2023)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v7i2.17236

Abstract

Telah dilakukan penelitian tentang Pengaruh Jumlah Pelat Elektroda Pada Proses Elektrokoagulasi Terhadap Kualitas Air Sumur Gali Di Kabupaten rokan Hilir Riau yang bertujuan: (i) Untuk mengetahui hasil uji sampel air sumur gali sebelum diterapkan metode elektrokoagulasi dengan elektroda Aluminium (AI). (ii) Untuk mengetahui apakah hasil uji sampel air gali setelah diterapkan metode elektrokoagulasi dengan elektroda Aluminium (Al) memenuhi standar kualitas air bersih (iii) Untuk mengetahui pengaruh jumlah dan jarak pelat elektroda terhadap kualitas air gali. Analisis kualitas sampel (air sumur gali) dilakukan sebelum dan sesudah menggunakan elektrokoagulasi. Parameter penelitian yang divariasikan pada metode elektrokoagulasi dengan jumlah pelat yaitu 2, 4, dan 6 dengan variasi jarak 2, 3, dan 4 cm dengan menggunakan tegangan 9 volt. Hasil uji sampel air sumur gali sebelum diterapkan metode elektrokoagulasi dengan elektroda aluminium (Al) telah memenuhi standar kualitas air bersih berdasarkan Peraturan Menteri No. 416/MENKES/PER/IX/1990. Pada parameter fisika sudah memenuhi standar air bersih sedangkan parameter kimia yang belum memenuhi standar air bersih adalah pH dan kadar besi. Hasil uji sampel air sumur gali setelah diterapkan metode elektrokoagulasi dengan elektroda aluminium (Al) dengan variasi jumlah pelat dan jarak pelat telah memenuhi standar kualitas air bersih. Pada parameter fisika sudah memenuhi standar air bersih sedangkan parameter kimia yang belum memenuhi standar air bersih adalah pH dan kadar besi. Hasil uji sampel air sumur gali setelah diterapkan metode elektrokoagulasi dengan elektroda aluminium (Al) dengan variasi jumlah pelat dan jarak pelat telah memenuhi standar kualitas air bersih. Pada parameter fisika sudah memenuhi standar air bersih sedangkan parameter kimia yang belum memenuhi standar air bersih adalah pH dan kadar besi. Hasil uji sampel air sumur gali setelah diterapkan metode elektrokoagulasi dengan elektroda aluminium (Al) dengan variasi jumlah pelat dan jarak pelat telah memenuhi standar kualitas air bersih.
Co-Authors Abdul Halim Daulay Abdullah Aida Febriana Tanjung Amanda, Syahna Dwi Andara Paulina Anggun Hermi Palupi Annisa Aulia Pratiwi Ardian Afandi Armansyah Armansyah Arninda Pratiwi Cholish Debby Marantika Dickiy Akbar Dien Rahmi Waruwu Dwitha Astari Ety Jumiati Feby Inka Putri Fitra Aulia Berutu Haryu Wanda Desgira Heni Puspita Sari Hilwa Anisa Hulu, Fitria Nova Husnah, Miftahul Indah Pratiwi Tanjung Indah Sawitri Irmawati Koto Jefri Ardiansyah Nasution Juli Iriani Jumiati, Ety Kartika Manalu Lansari Daulay Maharani Putri Miftahul Husnah Miftahul Husnah Muhammad Rajali Harahap Mulkan Iskandar Nasution Mulkan Iskandar Nasution Mutiah Lubis Nadilla Putri Nadjara Yolanda Nazaruddin Nasution Nujulia Subuharni Nurul Rizki Amalia Pinem, Lela Feranita Purnama Indah Lase Putri Dwi Ananda Rahmasari Pohan Rajai Sitorus Ramidin, Ramidin Ratni Sirait Ratni Sirait Ratni Sirait Ratni Sirait Ratni Sirait Ria Muliyana Rizki Qorina Rosyidah Mardiyah Sagala Rosyidah Mardiyah Sagala Sahdinal Adi sari, Bella Novita Sinaga, Roida Br sri wulandari Taufiq Hidayat Tri Ninda Malika Vicha Indriany Widya, Eka Wulandari Armaya Sembiring Zulkarnain Putra