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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 Wanto Baihaki Ahmad Yani Aisyah Putri Patrisia Akhmad Husein Rifa’i Ali Imran Sinaga Alifa Fitrah Amran Yahya Anak Agung Istri Sri Wiadnyani Ananda Lutfiyatul Hasanah Andy Prasetya Budy Nugroho Ani Pujiantini Anita Anita Anna Miftahuhul Jannah Nurrohmani Ansyarif Khalid Aprilia Azamti, Baiq Nova Ario Senjaya Arlina, Arlina Asnaniar, Wa Ode Sri Aswin Nur Syahbana Aulia Syahfitri Basalamah, Muhammad Ridwan Bilqis Salsabila Deswita Dewi Agustina Diana Putri Oktarini Dimas Fathur Fauzi Juniawan Dinar Syahputri Dita Suci Romadhoni Diyah Prawestri Duwi Putri Lestari Dwi Handayani Edward E. Pandelaki eif sparzinanda Eliaty Paturungi Endang Susilowati Erianjoni Erianjoni Etty Saraswati Eunike Shine Sitohang Fahmi Faizal Izmy Farid Faradin Farida Halis Febrian Josua Panjaitan Finkah Sabillah Firdausi Nafiroh Fitri Hayati Frastica Deswardani Griselda Putri Vania Florence Hasudungan Gultom Hindayati Mustafidah I MADE SUTARGA I Nyoman Suaka Iful Amri IKA RAKHMAWATI Imam Subarkah IMRO’ATUS SHOLIHAH Imsar Imsar Indah Ramadhani Indriyana Indriyana Inul Gacici Irfan Saputra Isjoni Isjoni Ita Athia Jeni Susyanti Jesi Pebralia Khalikussabir, Khalikussabir Kholilah Zuhairoh Kusuma, Ratu Lefi Ayarai Leoni Alfina Linda Handayani Luthfi Arief Prayoga M Arif Syaifulloh M. Farchan Fuadi M. Habibi Ramadhan Made Pasek Kardiwinata Maria Fatima Palupi Maryam Maryam Maysa Chairani Meilinda Hamida Hasan Melisa Melisa Miratul Imaniah Mohamad Bastomi Mohamad Choerul Subchi MUHAMMAD AGUS SALIM Muhammad Sholehuddin Mulia Syahputri Mushochichul Chasanah Nadia Raifah Nawa Kartika Nanda Purnama Nehru Nehru Ni Nyoman Karmini Nihayatul Husna Niya Uswatun Nuha Novi Diah Ayu Angelita Novida Ariyani Novitasari, Rifni Nuari Anisa Sivi Nunung Febriyaningsih Nur Fadhilah Ahmad Hasibuan Nur Hidayati Nur Ilah Phadila Nurlina Nurlina Pratiwi Puji Pratiwi Puji Lestari Puriani, Risma Anita Putri Putri Quen Kholisa Purba Ramdazani Ramdazani Ratna Tri Hardaningtyas, Ratna Tri Ratu Kusuma Retno Damayanti Soejoedono Rini Lidia Tamba Rizal Soekarno Putra Rizki Novirson Ronny Malavia Mahardani Ronny Malavia Mardani Ronny Malavia Mardani Roro Fatikhin Rosmala Dwi Rosmini Rosmini Rusmelia Rusmelia Rustan Selvia Apriliani1 Septa Sari Serli Rosalina Shen Shen Panggabean Sindi Putri Ayu SITI KHOMARIYAH Siti Nur Aini Sururi Sitti Nikmah Marzuki, Sitti Nikmah Stevani Trio Saputra Syamsiar, Syamsiar Tika Arniza Meidina Tika Restianingsih Titin Woro Murtini Tri Sugiarti Ramadhan Usiono Usiono VEVI SURYENTI PUTRI, VEVI SURYENTI Wahidyanti Rahayu Hastutiningtyas Wanda Yunita Pramesti Yeni Solfiah Yesni, Marnila Yulastini, Fitria zainarti zainarti Zeinal Abidin Zuhrinal M. Nawawi