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Journal : journal online of physics

PENGARUH FAKTOR EKSPOSI TERHADAP KUALITAS CITRA RADIOGRAFI eif sparzinanda; Nehru Nehru; nurhidayah nurhidayah
JOURNAL ONLINE OF PHYSICS Vol. 3 No. 1 (2017): JOP (Journal Online of Physics) Vol 3 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.412 KB) | DOI: 10.22437/jop.v3i1.4428

Abstract

The research on the influence of exposure factor on radiographic image quality has been conducted. This research uses phantom, water in plastic container as human substitute with focus film distance (FFD) 100 cm and broad field of irradiation 15 cm × 15 cm. The exposure conditions are given by exposure factors including variations in tube voltages of 60 kV, 65 kV, 70 kV, 75 kV, 80 kV called standard techniques or routine voltage techniques and the time flow is as big as 20 mAs, 25 mAs and 30 mAs. The results showed that the image quality will decrease with the use of current and time high. Image quality can be seen on gray-level histogram using java Image-J Basics version 1.38 software to get optimum value from exposure factor on image quality.
APLIKASI SENSOR KELEMBABAN DAN FLEX SENSOR BERBASIS ARDUINO UNO UNTUK SISTEM PENDETEKSI LONGSOR Rustan Rustan; Jesi Pebralia; Tika Restianingsih; Frastica Deswardani; Mardian Peslinof; Nurhidayah Nurhidayah; Iful Amri
JOURNAL ONLINE OF PHYSICS Vol. 7 No. 1 (2021): JOP (Journal Online of Physics) Vol 7 No 1
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v7i1.14805

Abstract

Early detection of landslides is very important to minimize the number of deaths. Technological developments allow humans to predict the signs of landslides more accurately, quickly, and scientifically. In this study, sensors were tested to measure landslide disaster parameters, namely humidity sensors to measure soil moisture and flex sensors to measure soil movement. The sensor is controlled using a microcontroller Arduino Uno. A functionality test was carried out to test the ability of the sensors. The functionality test was carried out using the unit testing method. The unit testing method is carried out by comparing the functional test results of each sensor to the expected response. The moisture sensor functionality test shows that the sensor is able to respond to changes in water content in the soil with changes in voltage. The linear equation resulting from the calibration of the humidity sensor is y = -0.126x + 2.666 with R2 = 0.871. The flex sensor functionality test shows that the sensor is able to detect soil movement in the presence of changes in voltage. The linear equation resulting from the flex sensor calibration is y = -2.861x + 2507 with R2 = 0.964. This shows that the humidity sensor and flex sensor are good enough to be applied in the design of a landslide detection system.
Co-Authors A.Wulandari Achmad Agus Priyono Ahmad Riyaldi Muhctar Ahmad Wanto Baihaki Ahmad Yani Aisyah Putri Patrisia Akhmad Husein Rifa’i Ali Imran Sinaga Alifa Fitrah Am, Andri Nofiar Amran Yahya Anak Agung Istri Sri Wiadnyani Ananda Lutfiyatul Hasanah Andi Rezky Nurhidayah Andy Prasetya Budy Nugroho Ani Pujiantini Anna Miftahuhul Jannah Nurrohmani Ansyarif Khalid Aprilia Azamti, Baiq Nova Arlina Sirait Asnaniar, Wa Ode Sri Aswin Nur Syahbana Aulia Syahfitri Baharia Baharia Basalamah, Muhammad Ridwan Bastomi, Mohamad Bilqis Salsabila Citra Amalia Deswita Diana Putri Oktarini Dimas Fathur Fauzi Juniawan Dinar Syahputri Dita Suci Romadhoni Diyah Prawestri Duwi Putri Lestari Dwi Handayani Dwi Syukriady Edward E. Pandelaki Eliaty Paturungi Endang Susilowati Erianjoni Erianjoni Erniati Erniati Etty Saraswati Fahmi Faizal Izmy Farid Faradin Farida Halis Finkah Sabillah Firdausi Nafiroh Fitri Hayati Frastica Deswardani Griselda Putri Vania Florence Herawati Arief S Hindayati Mustafidah I MADE SUTARGA I Nyoman Suaka Iful Amri IKA RAKHMAWATI Imam Subarkah IMRO’ATUS SHOLIHAH Imsar Imsar Indah Ramadhani Indriyana Indriyana Irfan Saputra Isjoni Isjoni Ita Athia Jeni Susyanti Jesi Pebralia Jumriati, Jumriati Jurnal Agrotan Khalikussabir, Khalikussabir Kholilah Zuhairoh Kusuma, Ratu Larbiel Hadi Leoni Alfina Lilia Nurhidayati Linda Handayani Luthfi Arief Prayoga M Arif Syaifulloh M. Farchan Fuadi M. Habibi Ramadhan M. Khoirudin Made Pasek Kardiwinata Maria Fatima Palupi Maryam Maryam Masyitah Addina Maysa Chairani Meilinda Hamida Hasan Melisa Melisa Miratul Imaniah Mohamad Choerul Subchi MUHAMMAD AGUS SALIM Muhammad Faishal Muhammad Sholehuddin Mulia Syahputri Mushochichul Chasanah Nadia Raifah Nawa Kartika Nanda Purnama Nehru Ni Nyoman Karmini Nihayatul Husna Niya Uswatun Nuha Novi Diah Ayu Angelita Novida Ariyani Novitasari, Rifni Nuari Anisa Sivi Nur Fadhilah Ahmad Hasibuan Nur Hidayati Nur Ilah Phadila Nurlina Nurlina Pratiwi Puji Pratiwi Puji Lestari Puriani, Risma Anita Ratna Tri Hardaningtyas, Ratna Tri Ratu Kusuma Retno Damayanti Soejoedono Rizki Novirson Ronny Malavia Mahardani Ronny Malavia Mardani Ronny Malavia Mardani Roro Fatikhin Rosmala Dwi Rosmini Rosmini Rustan Safria Andy Selvia Apriliani1 Septa Sari Serli Rosalina Sindi Putri Ayu SITI KHOMARIYAH Siti Nur Aini Sururi Sitti Nikmah Marzuki, Sitti Nikmah sparzinanda, eif Syamsiar, Syamsiar Tika Arniza Meidina Tika Restianingsih Titin Woro Murtini Toghur Arifani Tri Sugiarti Ramadhan Usiono Usiono Vevi Suryenti Putri VEVI SURYENTI PUTRI, VEVI SURYENTI Wahidyanti Rahayu Hastutiningtyas Wanda Yunita Pramesti Widia Ulan Yeni Solfiah Yesni, Marnila Yulastini, Fitria zainarti zainarti Zeinal Abidin Zuhrinal M Nawawi