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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 CHEDS: Journal of Chemistry, Education, and Science EINSTEIN (E-JOURNAL) Jurnal Sains dan Teknologi Attadrib: Jurnal Pendidikan Guru Madrasah Ibtidaiyah
Masthura, Masthura
Universitas Islam Negeri Sumatera Utara, Medan, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry 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 Suhu Aktivasi Fisika Terhadap Uji Mikrostruktur Karbon Aktif Mangrove Rima Suastika; Masthura; Ratni Sirait
Attadrib: Jurnal Pendidikan Guru Madrasah Ibtidaiyah Vol. 6 No. 2 (2023): Pendidikan Dasar Anak
Publisher : Program Studi PGMI STAI Daruttaqwa Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54069/attadrib.v6i2.558

Abstract

Perbesaran pori pada struktur karbon aktif dimanfaatkan sebagai filter pada pengotor organik dan anorganik yang berasal dari air atau berasal dari limbah domestik maupun industri. Adapun tujuan penelitian ini adalah untuk mengetahui mikrostruktur dari karbon aktif kayu mangrove yang paling optimum. Variasi suhu aktivasi pada pengujian karbon aktif dimulai dari suhu 500 sampai dengan suhu 700 dengan waktu penahanan selama 60 menit. Hasil dari pengujian mikrostruktur SEM (Scanning Elektron Microscopy) pada suhu 500 terlihat luas permukaan dan pori belum terbentuk, pada suhu 600 luas permukaan dan pori karbon telah terbentuk dengan baik, sedangkan hasil mikrostruktur karbon suhu 700 telah hancur dan ada banyak pengotor dalam karbon aktif. Diameter pori karbon pada suhu 500 sebesar 0,8895 , suhu 600 diameter pori 1,1050 dan pada suhu 700 dengan diameter pori 1,0784 . Hasil mikrostruktur yang paling optimum di dapatkan di suhu 600 karena pori yang dihasilkan sudah terbentuk dengan baik dengan diameter 1,1050 .
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.
PENGARUH VARIASI KOMPOSISI KULIT DURIAN DAN BATU APUNG PADA KARAKTERISTIK KERAMIK LANTAI Masthura Masthura; Miftahul Husnah; Roida Br Sinaga
JISTech (Journal of Islamic Science and Technology) Vol 9, No 1 (2024)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v9i1.20586

Abstract

Telah dilakukan penelitian tentang Pembuatan keramik lantai dengan campuran kulit durian, batu apung dan tanah liat yang bertujuan untuk mengatahui pengaruh penambahan serbuk limbah kulit durian dan batu apung terhadap kualitas keramik lantai dan untuk mengetahui komposisi pencampuran serbuk limbah kulit durian dan batu apung yang menghasilkan keramik lantai dengan karakterisasi optimal. Komposisi pencampuran kulit durian, batu apung dan tanah liat yang digunakan adalah 5 % : 25 % : 70 %, 6 % : 24 % : 70 %, dan 7 % : 23 % : 70 % : 60 %. Keramik dicetak menggunakan mesin Hot Press dengan tekanan sebesar 10 kg/cm2 dengan suhu 90 °C selama 15 menit. Metode karakterisasi yang digunakan meliputi kekerasan, kuat lentur, daya serap air, porositas, densitas dan SEM (scanning Electron Microscopy). Penambahan serbuk kulit durian dan batu apung berpengaruh terhadap karakteristik keramik lantai yang dihasilkan. Penambahan serbuk kulit durian dan batu apung pada suhu 900 oC dan 1000 oC menyebabkan penurunan pada nilai densitas. Pada suhu 900 oC dan 1000 oC menyebabkan peningkatkan pada nilai porositas, penyerapan air dan kuat lentur dan kekerasan. Keramik yang optimum pada sampel C pada suhu 1000 oC dengan variasi komposisi 70 % : 23 % : 7 % dengan uji penyerapan air, kuat lentur dan kekerasan memenuhi SNI.
PEMANFAATAN SARI BUAH CERMAI (PHYLLANTHUS ACIDUS) SEBAGAI ENERGI ALTERNATIF BIO-BATERAI DENGAN VARIASI ELEKTRODA Abdul Halim Daulay; Masthura Masthura; Syahna Dwi Amanda
JISTech (Journal of Islamic Science and Technology) Vol 9, No 1 (2024)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v9i1.20881

Abstract

Kebutuhan akan sumber energi saat ini semakin lama semakin meningkat. Peningkatan ini sejalan dengan meningkatnya pertumbuhan penduduk yang semakin banyak menggunakan sumber energi  seperti batrai. Tujuan dilakukannya penelitian tentang pembuatan bio-baterai dengan variasi elektroda memanfaatkan sari buah ceremai adalah untuk mengetahui pengaruh variasi elektroda, variasi volume sari buah cermai (Phyllanthus acidus) terhadap kelistrikan bio-baterai dan kemampuan larutan sari buah cermai (Phyllanthus acidus) dalam menyalakan lampu LED putih 3,3 V selama 2 jam. Sampel yang digunakan sebagai elektrolit adalah larutan sari buah cermai. Elektroda yang digunakan Cu sebagai katoda dan Al, Fe, dan Zn sebagai anoda. Sifat kelistrikan yang akan diteliti adalah nilai tegangan, arus, daya listrik dan beban yang digunakan untuk mengukur penurunan tegangan dan arus listrik bio-baterai larutan sari buah cermai adalah LED putih 3,3 V. Volume larutan sari buah cermai dalam penelitian ini adalah 300, 400, dan 500 ml. Variasi elektroda pada sari buah cermai (Phyllanthus acidus) sangat berpengaruh terhadap kelistrikan bio-baterai. Semakin banyak volume larutan sari buah cermai maka semakin besar nilai kelistrikan yang dihasilkan bio-baterai. Bio-baterai pada larutan buah cermai (Phyllanthus acidus) mampu untuk menyalakan lampu LED 3,3 volt selama 2 jam. Seiring dengan waktu pembebanan maka terjadi penurunan pada kelistrikan bio-baterai.
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.
Co-Authors Abdul Halim Daulay Abdullah Aida Febriana Tanjung Ainun Azizah 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 Fitria Nova Hulu Haryu Wanda Desgira Heni Puspita Sari Hilwa Anisa Homsiah Mayang Sari Silalahi Husnah Miftahul Indah Pratiwi Tanjung Indah Sawitri Irmawati Koto Isti Afliza 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 Rima Suastika Rizka Alivia Nasution Rizki Qorina Roida Br Sinaga Rosyidah Mardiyah Sagala Rosyidah Mardiyah Sagala Sahdinal Adi sari, Bella Novita Shati Suci Ramadhani Sri Fuji Ariska sri wulandari Syahna Dwi Amanda Tinsia Tinsia Tri Ninda Malika Vicha Indriany Widya, Eka Wulandari Armaya Sembiring Zulkarnain Putra