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All Journal Buletin Udayana Mengabdi Jurnal Ilmu Dasar Jurnal Sains Materi Indonesia Jurnal Neutrino : jurnal fisika dan aplikasinya Journal of Mathematical and Fundamental Sciences Jurnal Penelitian Pendidikan IPA (JPPIPA) Kappa Journal Jurnal Fisika Indonesia
Made Sumadiyasa
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Materials Science & Nanotechnology Mathematics Physics Other

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Analisis Distribusi Dosis Radiasi terhadap Perencanaan Radioterapi Menggunakan Metode Segmentasi Citra pada Kasus Tumor Otak dengan Teknik Intensity Modulated Radiation Therapy (IMRT) Saputri, Izza Wahyu Saputri; Suryatika, Ida Bagus Made; Amelia, Cory; Sandi, I Nengah; Sumadiyasa, Made; Widagda, I Gusti Agung; Irhas, Rozi
Kappa Journal Vol 9 No 1 (2025): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i1.29562

Abstract

A study has been conducted on the effect of the number of segments on the radiation dose distribution of photon beams in brain tumor cases using the Intensity Modulated Radiation Therapy (IMRT) technique. This study used 20 primary data and 10 secondary data from brain tumor patients with 6 MV photon beams and a total dose of 6000 cGy. Calculations were performed by analyzing the Homogeneity Index (HI) and Conformity Index (CI) values as well as the radiation dose to the Organs at Risk (OAR), followed by statistical testing. Based on the conducted research, the results showed that HI and CI values for 5, 10, and 15 segments were different. For example, the HI value for 5 segments was more homogeneous, approaching 0, and the CI value for 10 segments was closer to 1, which indicates a better match with the PTV shape. The average maximum dose distribution for OARs with 5 segments in the brainstem, chiasma, left eye, right eye, left lens, and right lens were 4541.9 cGy, 3893.8 cGy, 2754.2 cGy, 2516.1 cGy, 740.8 cGy, and 628.0 cGy, respectively. With 10 segments, the doses for these OARs were 4104.2 cGy, 3633.9 cGy, 2583.9 cGy, 3124.2 cGy, 710.5 cGy, and 625.5 cGy, respectively. With 15 segments, the doses for the same OARs were 4123.0 cGy, 3956.2 cGy, 2753.3 cGy, 2433.7 cGy, 667.7 cGy, and 547.8 cGy, respectively. All maximum dose distributions for the OARs received by the patients were still within the tolerance limits stated in the Radiation Oncology A Question-Based Review 2nd Edition.
Perbandingan Metode Peluruhan untuk Memperkirakan Berakhirnya Gempabumi Susulan (Studi Kasus Gempabumi Signifikan di Wilayah Bali Tahun 2019-2020) Soleh, Anggun Mohamad; Sukarasa, I Ketut; Gunawan, Tomy; Suarbawa, Komang Ngurah; Sumadiyasa, Made; Anggarani, Ni Kadek Nova
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.20743

Abstract

An Data collection and processing has been carried out to compare the aftershock decay method which aims to determine the assumption of aftershock ending time, how much energy, fracture length and fracture velocity occurred on the island of Bali. Data processing using several methods, namely the Omori method, the Mogi method I, the Mogi II method, and the Utsu method. The data used is based on the BBMKG Region III Denpasar earthquake catalog book, that’s is case of the Buleleng earthquake on November 14 2019, the Jembrana earthquake on July 16 2019 and the South Kuta earthquake on March 19 2020. Based on the results of data processing, for the Buleleng earthquake case the method closest to the observations was the Mogi II method with the energy is 1012 joules, the fracture length is 1.186 m and the fracture speed is 29.78 m/s. As for the Jembrana and South Kuta earthquake cases, the results of the calculation of all methods have not come close to the observations. The magnitude of the energy, the length of the fracture and the fracture speed of the Jembrana earthquake is 3.562313 joules, 32.733 m, 327.330 m/s. Whereas for the South Kuta earthquake, the energy, fracture length and fracture velocity were 3.162317 joules, 125.890 m, 70.750 m/s
Identifikasi Pencemaran Air Lindi pada Kawasan Asrama di Kampus Universitas Udayana dengan Menggunakan Metode Geolistrik Konfigurasi Wenner Pratama, Maulana Rizki; Putra, I Ketut; Nurmalasari, Ni Putu Yuni; Sumadiyasa, Made; Sandi, I Nengah; Baskoro, Winardi Tjahyo
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.20842

Abstract

Dormitory land in the Udayana University area is often used as a place to dispose of garbage. Basically leachate contains metal content such as zinc (Zn) and mercury (Hg) which seep into the soil. Identification to determine the presence of leachate at a certain depth, can use the Wenner Configuration Geoelectrical Method. From the data obtained then processed using Res2dinv it was found that the leachate content in the Udayana University Dormitory Area is found at a distance of 33m, 43m, 63m, 83m, from the pile of garbage and a depth of 1.25 - 3.75m below the surface of the pile of garbage for coordinates 115.165240 BT, 8.798640 LS to 115.164955 BT, 8.799100 LS and a distance of 62m, 72m, 82m, from the garbage pile and a depth of 1.25 – 6.38m below the surface of the garbage pile at coordinates 115.165091 BT, 8.798557 LS to 115.164730 BT, 8.799021 LS.
Bahasa Inggris Fahik, Gracia Paula; Gusti Ngurah, Sutapa; Widagda, I Gusti Agung; Anggarani, Ni Kadek Nova; Sumadiyasa, Made; Kasmawan, I Gde Antha
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.10382

Abstract

A study has been conducted on the Effective Dose of Sensitive Organs and the Risk of Cancer in Contrast to Abdominal CT-Scan Examination to determine the effective dose of sensitive organs and the risk of cancer in male and female patients. This study was conducted at Bali Mandara Hospital, and data was used, namely, 60 CT-scans of the Abdomen in contrast to patient examination data. The sensitive organs of concern in this study are the stomach, colon, bladder, and liver. To determine the effective dose value of sensitive organs, the equivalent dose value (????????) is multiplied by the value (W????) in each sensitive organ. From the calculation results obtained, it is known that the highest dose is received by the stomach and colon with a value of 9.90  ± 3.94  mSv for male patients and 8.82  ± 2.27 mSv for female patients. To find out the cancer risk value in each organ for male and female patients is done by multiplying the equivalent dose value (????????) by the value (rt) in each organ in adult patients. From the results obtained, patients with the highest risk of cancer are male patients with the highest risk, namely the colon organ, with a risk of 79,16 ×10-4 %. From the results obtained, an analysis was carried out to compare the cancer risk in male and female patients for each organ using the Independent T-Test. From the results obtained, it was found that there was a difference in cancer risk between the two patients, where male patients have a greater risk of cancer than women, with the highest average difference in cancer risk, namely 0.00086 ± 0.00066% in the colon organ
Co-Authors A. A. Ngr. Gunawan A. A. Ngurah Gunawan Angelia Bella Kusumaningtyas Asni Mulyati Jeni Baskoro, Winardi Tjahyo Cory Amelia Dewa Ayu Sukma Pranastia Fahik, Gracia Paula G. Agus Permana Putra Sujana Gunawan, Tomy Gusti Ngurah Sutapa Gusti Ngurah, Sutapa Hanan Hanan Hery Suyanto I B Sujana Manuaba I G A. Putra Adnyana I G. A. Widagda I Gde Antha Kasmawan I Gede Astina I Gusti Agung Ayu Ratnawati I Ketut Putra I Ketut putra, I Ketut I Komang Wahyu Surya Permana I Nengah Artawan I Nengah Sandi I Wayan Suarya I.B.S. Manuaba Ida Ayu Putu Inten Gayatri Ida Bagus Made Suryatika Ida Bagus Made Suryatika Ida Wisnu Sari IGA Putra Adnyana Irhas, Rozi Isnaeni Isnaeni K. N. Suarbawa K. N. Suarbawa Komang Ngurah Suarbawa Maulida Nirwana Islami Muna Alfira Ni Kadek Gita Hari Yanti Ni Kadek Gita Hari Yanti Ni Kadek Nova Anggarani Ni Made Rasmini Ni Nyoman Putri Windari Ni Nyoman Rupiasih Ni Wayan Eri Sandriani Nurmalasari, Ni Putu Yuni Nyoman Wendri Nyoman Wndri P. B. Vidyasagar P. Suardana Pratama, Maulana Rizki Putra Adnyana, IGA Putu Erika Winasri Putu Ika Paramitha Putri Saputri, Izza Wahyu Saputri Septiana Ribka Purnomo Soleh, Anggun Mohamad Sukarasa, I Ketut Wayan Balik Sudarsana Wayan Gede Suharta Widagda, I Gusti Agung Windarjoto Windarjoto Wolfharditia Oktaviana Nita