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All Journal Buletin Udayana Mengabdi Jurnal Fisika FLUX Jurnal Penelitian Pendidikan IPA (JPPIPA) Kappa Journal
I G. A. Widagda
Universitas Udayana
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics Other

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PENDAMPINGAN KEGIATAN EKSRAKURIKULER KIR DALAM UPAYA MENINGKATKAN KUALITAS SEKOLAH SMA DWIJENDRA DENPASAR Komang Dharmawan; Y. Ramona; N. N. Rupiasih; I G. A. Widagda
Buletin Udayana Mengabdi Vol 19 No 3 (2020): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.27 KB)

Abstract

Youth Scientific Work (KIR) basically aims to trigger curiosity about natural phenomena related to science and technology. KIR can also increase the ability to think critically about natural phenomena and increase creativity that fosters creative ability and critical thinking. The purpose of this assistance is to introduce research methods for groups of teachers so students get better quality coaching. The mentoring method applied is In-House-Training, which is the implementation of mentoring at the relevant school. In this assistance 4 scientific works have been produced by high school students of Dwijendra Denpasar who are ready to be presented in KIR competitions both regionally and nationally.
Penyelesaian Persamaan Schrodinger Tidak Bergantung Waktu Dengan Metode Finite Difference I Gusti Agung Widagda; I Nengah Artawan; Wayan Gede Suharta; I Gde Antha Kasmawan
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 21, No 3 (2024): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v21i3.19289

Abstract

The solution of time-independent Schrodinger equation (TISE) has been studied by several researchers. In this research, a TISE solution is found by using the finite difference method which is implemented in computer program code by using the Python language. TISE in the form of a second order differential equation is solved by using the finite difference method. In order to normalize the resulting wave function it is necessary to divide it by square root of the integral of the squared wave function. The integral method used is the Riemann method. In order to prove quantitatively that the TISE solution of the finite difference method is the same as or close to that of the analytical method, it is carried out by using linear regression and the z test. The research results show that the linear regression results from the two methods are nearly close. This is able to be seen from the values of  gradient (m), intercept (c) and coefficient of determination (R2) which are close to ideal values, namely, 1, 0 and 1, respectively. In addition, from the z test it is concluded that the null hypothesis H0 is accepted, which means the solution of finite difference method is equal to analytical solution by a confidence level of 95 percent.
Bahasa Inggris Gracia Paula Fahik; Sutapa Gusti Ngurah; I Gusti Agung Widagda; Ni Kadek Nova Anggarani; Made Sumadiyasa; I Gde Antha Kasmawan
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
Studi Dosis Radiasi Berkas Foton Energi 6 MV dan 10 MV Terhadap Nilai HI dan CI pada Kasus Kanker Serviks Menggunakan Teknik Intensity Modulated Radiation Therapy (IMRT): - Gusti Ngurah Sutapa; I Wayan Suarya; Wayan Balik Sudarsana; Ida Bagus Made Suryatika; Made Sumadiyasa; I Gusti Agung Widagda
Kappa Journal Vol 8 No 3 (2024): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.27385

Abstract

Penelitian ini menganalisis distribusi dosis radiasi foton 6 MV dan 10 MV pada pasien kanker serviks menggunakan teknik Intensity Modulated Radiation Therapy (IMRT). Tujuan penelitian adalah untuk mengevaluasi keseragaman dosis dan kecocokan dosis pada Planning Target Volume (PTV) dengan menggunakan Homogeneity Index (HI) dan Conformity Index (CI). Sampel penelitian terdiri dari 10 pasien kanker serviks yang dirawat di RSUP Prof. I G. N. G. Ngoerah Denpasar. Dosis yang diterima pasien dianalisis menggunakan Dose Volume Histogram (DVH) untuk masing-masing energi foton. Hasil menunjukkan bahwa rata-rata HI untuk energi 6 MV adalah 0,0817 dan untuk 10 MV adalah 0,0803, sementara CI untuk 6 MV dan 10 MV masing-masing adalah 0,9556 dan 0,9701. Nilai HI dan CI yang dihasilkan sesuai dengan standar ICRU Report 83, yang menunjukkan distribusi dosis yang seragam dan efektif pada PTV. Temuan ini mengindikasikan bahwa kedua energi foton dapat memberikan distribusi dosis yang optimal, dan pemilihan energi dapat disesuaikan dengan kebutuhan klinis tanpa mengurangi kualitas terapi.
Analisis Distribusi Dosis Radiasi terhadap Perencanaan Radioterapi Menggunakan Metode Segmentasi Citra pada Kasus Tumor Otak dengan Teknik Intensity Modulated Radiation Therapy (IMRT) Izza Wahyu Saputri Saputri; Ida Bagus Made Suryatika; Cory Amelia; I Nengah Sandi; Made Sumadiyasa; I Gusti Agung Widagda; Rozi Irhas
Kappa Journal Vol 9 No 1 (2025): Kappa Journal
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.
Co-Authors Arief Laksono Cory Amelia Gracia Paula Fahik Gusti Ngurah Sutapa Hery Suyanto I G. Cahya Pradhana I Gde Antha Kasmawan I Gede Hendrawan I Gede Surya Merta I Made Kertayasa I Nengah Artawan I Nengah Sandi I Putu Wahyu Pranata Kusuma Jaya I Wayan Suarya Ida Bagus Alit Paramarta Ida Bagus Made Suryatika Ivan Bachtiar Pandapotan Izza Wahyu Saputri Saputri k krisna g Kadek Darmo Komang Dharmawan Komang Ngurah Suarbawa Made Sumadiyasa Muhammad Arif Budiman Ni Kadek Nova Anggarani Ni Luh Putu Trisnawati Ni Nyoman Rupiasih Rozi Irhas Sukarasa, I Ketut Sutapa Gusti Ngurah Wayan Balik Sudarsana Wayan Gede Suharta Yan Ramona