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All Journal Jurnal Ampere JOURNAL ONLINE OF PHYSICS CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Jurnal Analis Farmasi Jurnal Penelitian Fisika dan Terapannya (JUPITER) JAF (Jurnal Analis Farmasi) Makara Journal of Science Environmental Science Journal (esjo)
Atina, Atina
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Medicine & Pharmacology Physics Other

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Waktu Paparan Medan Magnet Extremely Low Frequency 300 ΜT Terhadap Daya Hantar Listrik Pada Proses Fermentasi Tempoyak Ratna, Ratna; Jumingin, Jumingin; Atina, Atina
Environmental Science Journal (esjo) : Jurnal Ilmu Lingkungan 2025: Volume 3 Nomor 2 Juni 2025
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/esjo.v3i2.18448

Abstract

This study aims to analyze the exposure time of the Extremely Low Frequency 300 μT magnetic field on the electrical conductivity of the tempoyak fermentation process. The research method is the experimental method. The research sample was divided into two groups, namely the control group which was not exposed to magnetic fields and the experimental group, namely the group that was given exposure to the Extremely Low Frequency 300 μT magnetic field with a time of 20, 40, and 60 minutes. The data obtained were analyzed by the F test, if the exposure time of the Extremely Low Frequency 300 μT magnetic field had a significant effect, then continued with the BNT test. The results showed that the electrical conductivity value in the experimental group was higher than the control group. The value of electrical conductivity in the control group is 1147 μS/cm, the value of electrical conductivity at 20 minutes exposure is 1156 μS/cm-1268 μS/cm, 40 minutes exposure is 1177 μS/cm 1275 μS/cm, and 60 minutes exposure is 1187 μS/cm-1331 μS/cm. The longer the exposure time to the 300 μT Extremely Low Frequency magnetic field, the higher the tempoyak electrical conductivity value. From the F test that has been carried out, it is found that the exposure time of the Extremely Low Frequency magnetic field significantly affects the value of the tempoyak electrical conductivity (FCount = 26,839 > FTabel = 4,76) with a significant 5%.  
Sistem Penyiraman Tanaman Otomatis Menggunakan Sensor DHT11 Jumingin, Jumingin; Atina, Atina; Juanda, Agung
Jurnal Ampere Vol. 7 No. 2 (2022): JURNAL AMPERE
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/ampere.v7i2.9172

Abstract

Along with advances in technology, watering plants manually is considered less efficient because it requires the owner's time and effort. The purpose of this research is to design a prototype of an automatic plant watering device using the DHT11 sensor. This study uses a field experiment method, where the design is made according to the conditions in the field. By utilizing the Arduino IDE software using the programming language and ESP 32 as the main control system that will manage all input and outputcomponents. The DHT11 sensor will detect the temperature and humidity of the air around the plants, the output will be displayed on the I2C 16x2 LCD screen so that users can see the air temperature values in real time. In addition, the output from the DHT11 sensor will also send an on/off command to the relay. This command is used to control the flame of the water pump. The results obtained from this study arethat the relay will turn on automatically when the DHT11 sensor detects an air temperature of more than 30 ℃ and at that time the pump will automatically circulate water. When the DHT11 sensor detects an air temperature of ≤ 30℃ the relay will automatically turn off and the water pump will not turn on so the water will stop flowing. Thus the resulting prototype can be used as an automatic sprinkler design with the DHT11 sensor as an air temperature detector.ABSTRAKSeiring dengan kemajuan  teknologi, penyiraman tanaman secara manual dinilai kurang efisien karena memerlukan waktu serta tenaga pemiliknya. Tujuan penelitian ini merancang prototipe alat penyiraman tanaman secara otomatis menggunakan sensor DHT11. Penelitian ini menggunakan metode eksperimen lapangan, dimana rancangan yang dibuat menyesuaikan dengan keadaan di lapangan. Dengan memanfaatkan oftware Arduino IDE menggunakan bahasa pemrograman C dan ESP 32 sebagai sistem kendali utama yang akan mengatur semua komponen input dan output. Sensor DHT11 akan mendeteksi temperatur dan kelembaban udara di sekitar tanaman, keluarannya akan ditampilkan pada layar LCD I2C 16x2 sehingga pengguna dapat melihat nilai temperatur udara secara realtime. Selain itu, keluaran dari sensor DHT11 juga akan mengirimkan perintah on/off pada relay. Perintah tersebut digunakan untuk mengendalikan nyala pompa air. Hasil yang didapatkan dari penelitian ini adalah relay akan menyala secara otomatis ketika sensor DHT11 mendeteksi temperatur udara lebih dari 30℃ dan pada saat itu secara otomatis juga pompa akan mengalirkan air. Ketika sensor DHT11 mendeteksi temperatur udara ≤ 30℃ relay akan mati secara otomatis dan pompa air tidak akan menyala sehingga air akan berhenti mengalir. Dengan demikian prototipe yang dihasilkan dapat dijadikan sebagai rancangan penyiram otomatis dengan sensor DHT11 sebagai detektor temperature udara.
Waktu Paparan Medan Magnet Extremely Low Frequency 300 ΜT Terhadap Daya Hantar Listrik Pada Proses Fermentasi Tempoyak Ratna, Ratna; Jumingin, Jumingin; Atina, Atina
Environmental Science Journal (esjo) : Jurnal Ilmu Lingkungan 2025: Volume 3 Nomor 2 Juni 2025
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/esjo.v3i2.18448

Abstract

This study aims to analyze the exposure time of the Extremely Low Frequency 300 μT magnetic field on the electrical conductivity of the tempoyak fermentation process. The research method is the experimental method. The research sample was divided into two groups, namely the control group which was not exposed to magnetic fields and the experimental group, namely the group that was given exposure to the Extremely Low Frequency 300 μT magnetic field with a time of 20, 40, and 60 minutes. The data obtained were analyzed by the F test, if the exposure time of the Extremely Low Frequency 300 μT magnetic field had a significant effect, then continued with the BNT test. The results showed that the electrical conductivity value in the experimental group was higher than the control group. The value of electrical conductivity in the control group is 1147 μS/cm, the value of electrical conductivity at 20 minutes exposure is 1156 μS/cm-1268 μS/cm, 40 minutes exposure is 1177 μS/cm 1275 μS/cm, and 60 minutes exposure is 1187 μS/cm-1331 μS/cm. The longer the exposure time to the 300 μT Extremely Low Frequency magnetic field, the higher the tempoyak electrical conductivity value. From the F test that has been carried out, it is found that the exposure time of the Extremely Low Frequency magnetic field significantly affects the value of the tempoyak electrical conductivity (FCount = 26,839 > FTabel = 4,76) with a significant 5%.  
BODY LOTION EKSTRAK SIRIH HIJAU (Piper betle L.) DENGAN KANDUNGAN FITOKIMIA BERPOTENSI ANTIMIKROBA Fahera, Jiani; Setiawan, Andi Arif; Atina, Atina
JOURNAL ONLINE OF PHYSICS Vol. 11 No. 1 (2025): JOP (Journal Online of Physics) Vol 11 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v11i1.47387

Abstract

Penelitian ini menganalisis bahan aktif antimikroba dalam ekstrak daun sirih hijau (Piper betle L.) untuk pengembangan body lotion. Ekstrak diperoleh melalui metode maserasi dan diuji secara fitokimia, menunjukkan kandungan flavonoid dan tanin yang berpotensi sebagai antimikroba. Body lotion diformulasikan dengan empat variasi konsentrasi ekstrak  0% (F0), 10% (F1), 15% (F2), dan 20% (F3). Hasil pengujian viskositas menunjukkan penurunan kekentalan seiring peningkatan konsentrasi ekstrak: F0 = 13.674 cP, F1 = 8.104 cP, F2 = 4.829 cP, dan F3 = 3.278 cP, namun semua formulasi tetap memenuhi standar SNI 16-4399 1996. Uji organoleptis menunjukkan perubahan warna menjadi hijau muda, aroma yang dapat diterima, serta tekstur halus. Nilai pH berkisar antara 5,6-6,1, aman untuk berbagai jenis kulit. Uji homogenitas menunjukkan distribusi komponen yang merata. Ekstrak daun sirih hijau memiliki potensi tinggi sebagai bahan aktif alami dalam body lotion antimikroba, dengan konsentrasi optimal antara 10% hingga 15% untuk keseimbangan kekentalan dan kenyamanan penggunaan.
Development of Bio Batteries Utilizing Coconut Dregs and Pineapple Extract as Alternative Energy Sources Toruan, Parmin Lumban; Wahyuni, Dita Putri; Rahmawati, Rahmawati; Atina, Atina
Circuit: Jurnal Ilmiah Pendidikan Teknik Elektro Vol. 8 No. 2 (2024)
Publisher : PTE FTK UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/crc.v8i2.20933

Abstract

Coconut and pineapple dregs contain ions that can be effectively used as energy sources. This study aims to evaluate the electricity generated from varying compositions of coconut dregs and pineapple juice in bio-batteries. The bio-battery paste is created using different ratios of coconut dregs and pineapple juice, along with electrodes (aluminum and graphite). An experimental method was employed. The results indicated that the highest voltage of 0.54 V and a current of 0.71 mA were achieved with 40 ml of pineapple juice added to the coconut dregs, whereas the lowest voltage of 0.40 V and a current of 0.01 mA were observed without adding pineapple juice. For the pineapple juice concentration, the highest voltage of 0.51 V and a current of 0.91 mA were obtained with 10 grams of coconut dregs, while the lowest voltage of 0.44 V and a current of 0.31 mA occurred with 40 grams of coconut dregs. The concentration of coconut dregs and pineapple juice significantly affects the voltage produced, while the current is significantly influenced by the concentration of coconut dregs but not by the concentration of pineapple juice.
Co-Authors Afifah, Ummu Alfarisa, Suhufa Andi Arif Setiawan, Andi Arif Fahera, Jiani Fermi, Enrico Haziza, Nur Heru Prasetio Juanda, Agung Jumingin, Jumingin Kartiwi, Putri Rahman, Dui Yanto Rahmawati, Rahmawati Ratna Ratna Safitri, Rika Noor Shinta Wulandari, Shinta Toruan, Parmin Lumban Wahyuni, Dita Putri Winahyu, Diah Astika Wipsar Sunu Brams Dwandaru Yulia Agustina