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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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Journal : JOURNAL ONLINE OF PHYSICS

 1 
ALAT MONITORING SUHU DAN DETAK JANTUNG MANUSIA BERBASIS INTERNET OF THINGS MENGGUNAKAN BLYNK Masthura Masthura; Mulkan Iskandar Nasution; Rajai Sitorus
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.25905

Abstract

The purpose of this research is to create and design a way to monitor temperature and human heart rate based on the Internet of Things using blynk. The process of making an Internet of Things-based human heart rate and temperature monitoring device begins with hardware design by connecting all tools, namely, NodeMCU Esp8266, Base Board, Mlx90614, Max30100, Oled, Led, and Buzzer followed by designing software on Arduino and the blynk application where later the measurement results will be compared with the actual tool commonly used, namely the Tensimeter. Based on previous research conducted by Agung (2019), a heart rate and body temperature measuring instrument was made using the Ds18b20 temperature sensor and the Max30100 sensor with Bluetooth Hc-05 communication with an accuracy of 99.1% on heart rate and 99.4% on body temperature, and previous research conducted by Jarot (2021), heart rate measurements were carried out with a pulse sensor 3 times with an error of 16.7 – 20%, as well as previous research conducted by Muhlis (2019). 2017), measurements of heart rate and body temperature were carried out wirelessly with a pulse sensor using 10 objects with an error of 4.94% and using an LM35 with 10 objects with an error of 1.66%. In this study using 3 different people objects which were measured 3 times for each object. with an average error percentage of 0.91% for body temperature and 2.90% for heart rate. after going through the process of hardware design and software design, we have succeeded in designing a temperature monitoring device and human heart rate that can be monitored remotely using the blynk application and has functioned properly and works according to its function and has the advantage of being easier to monitor because it is based on the Internet of Things in real time and has very accurate accuracy with measuring instruments commonly used compared to previous studies.
PENGGUNAAN BIJI KELOR (Moringa oleifera L.) DAN BIJI ASAM JAWA (Tamarindus indica L.) PADA PENJERNIHAN AIR SUMUR BOR MELALUI PROSES KOAGULASI DAN FLOKULASI DENGAN METODE SENTRIFUGASI Annisa Aulia Pratiwi; Masthura Masthura; Miftahul Husnah
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 1 (2023): JOP (Journal Online of Physics) Vol 9 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i1.27728

Abstract

Drilled well water at the Ar-Rahmat Mosque in Manunggal Village, Labuhan Deli District, Regency Deli Serdang, North Sumatra Province, has a color that tends to be yellow and cloudy. From the test results, it was found that the turbidity level in the drilled well water reached 35.3 NTU and the iron (Fe) content reached 1.679 mg/L. This shows that the borehole water does not meet clean water standards according to PERMENKES RI No.32 of 2017, namely with a maximum turbidity level of 25 NTU and a maximum iron (Fe) content of 1.0 mg/L. There is one way to purify borehole water by using moringa seeds and tamarind seeds in the coagulation and flocculation processes through the centrifugation method. This study aims to determine the most optimal seed composition in purifying well water. The mass variations used in this study were moringa seeds and tamarind seeds each with a mass of 0.08 grams and 0.09 grams. In this study, the results of the most optimal seed composition for purifying borehole water were tamarind seeds at a mass variation of 0.08 gram with a turbidity value of 0.53 NTU and a value of iron (Fe) content of 0.0087 mg/L. This shows that the drilled well water that has gone through the water purification process meets the PERMENKES RI standard No. 32 of 2017.
PENGAWASAN DAN PEMANTAUAN PERTUMBUHAN JAMUR TIRAM DENGAN MEMANFAATKAN TEKNOLOGI INTERNET of THINGS (IoT) Rizka Alivia Nasution; Masthura Masthura; Nazaruddin Nasution
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 2 (2024): JOP (Journal Online of Physics) Vol 9 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i2.31694

Abstract

Penelitian ini bertujuan untuk merancang alat pengawasan dan pemantauan pertumbuhan  jamur tiram dengan memanfaatkan  teknologi internet of things (IoT). Proses pembuatan alat dimulai dari perancangan hardware dengan menghubungkan semua komponen, meliputi ESP32 dan sensor DHT22 untuk mengukur suhu dan kelembaban di kumbung, sensor pH Media Tanam untuk mengukur pH di media tanam, sensor kelembaban tanah untuk mengukur kelembaban di media tanam jamur tiram, BH1750 untuk penerangan otomatis di malam hari, RTC DS3231 untuk mengatur jadwal otomatis pada pompa air, dan LCD 20 x 4 untuk menampilkan informasi suhu, kelembaban, pH, dan cahaya (lux) di media tanam jamur yang dilanjutkan dengan perancangan software pada arduino dan aplikasi blynk untuk memantau dan mengawasi pertumbuhan jamur tiram melalui alat. Suhu yang optimal untuk budidaya jamur adalah 30,20°C dengan deviasi sebesar 0,7%, sedangkan kelembaban optimal di kumbung jamur tiram adalah 72,70% dengan deviasi sebesar 3,7%. Kadar pH optimal di media tanam untuk budidaya jamur tiram adalah 6,52 dengan deviasi sebesar 0,3%.
MENENTUKAN ENERGI GAP (Eg) PADA KULIT BAWANG MERAH (ALLIUM CEPA L) MENGGUNAKAN METODE SPEKTRUM GELOMBANG ELEKTROMAGNETIK Tinsia Tinsia; Masthura Masthura; Husnah Miftahul
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 2 (2024): JOP (Journal Online of Physics) Vol 9 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i2.32853

Abstract

Kulit bawang merah mengandung senyawa aktif yaitu flavonoid, antioksidan, allisin, pektin, dan fitosterol, bahan-bahan tersebut dapat digunakan dalam proses kombinasi nanomaterial. Penelitian ini bertujuan untuk menentukan energi gap (Eg), intensitas, pendaran warna, dan hasil c-dots yang dihasilkan menggunakan kulit bawang merah yang disintesis menggunakan metode spektrum gelombang elektromagnetik. Pengujian ini mencampurkan 10g dan 20 g kulit bawang merah masing-masing dengan 300 ml aquades, kemudian disintesis menggunakan alat microwave dengan variasi waktu 10 menit, 15 menit dan 20 menit. Spektrofotometri UV-Vis menghasilkan frekuensi, puncak absorbansi dan mengetahui energi gap (Eg). C-dots A1 menghasilkan energi gap (Eg) sebesar 2,7380 eV, C-dots A2 menghasilkan energi gap (Eg) sebesar 2,5721 eV, C-dots A3 menghasilkan energi gap (Eg) sebesar 2,4671 eV, kemudian C-dots B1 menghasilkan energi gap (Eg) sebesar 2,2116 eV, C-dots B2 menghasilkan energi gap (Eg) sebesar 2,2091 eV, C-dots B3 menghasilkan energi gap (Eg) sebesar 2,2071 eV. Hasil Pl menunjukan kisaran puncak nilai intensitas terbesar pada frekuensi 520 nm dengan nilai intensitas 620 a.u. Uji pendarandengan menggunakan ultra violet (uv) menghasilkan pendaran berwarna hijau.
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