Article Per Year (5 Year)
p-Index From 2021 - 2026
1.503
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Komputer Journal of Mathematical and Fundamental Sciences Kappa Journal
I Ketut Putra
Universitas Udayana
Astronomy Chemistry Computer Science & IT Earth & Planetary Sciences Languange, Linguistic, Communication & Media Library & Information Science Mathematics Physics Other

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
PERANCANGAN DAN PEMBUATAN LUX METER DIGITAL BERBASIS SENSOR CAHAYA EL7900 I Made Satriya Wibawa; I Ketut Putra
Jurnal Ilmu Komputer Vol 11 No 1 (2018): Jurnal Ilmu Komputer
Publisher : Informatics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1347.11 KB) | DOI: 10.24843/jik.2018.v11.i01.p06

Abstract

Akan dibuat prototype alat lux meter digital berbasis sensor cahaya EL7900. Dengan menggunakan mikrokontroller R8C/13 sebagai unit proses dan tampilan hasil proses pada LCD. Unjuk kerja alat telah menunjukkan bahwa ada hubungan linier antara kebenaran tegangan output sensor dengan intensitas yang di tampilkan pada LCD. Kebenaran alat ini telah di kalibrasi dengan alat lux meter standar Hioki 3422 dan data menunjukkan bahwa intensitas yang di hasilkan oleh lux meter digital EL7900 berada pada range standar deviasi intensitas lux meter standar dengan kesalahan rata - rata sebesar 0,49 %. Serta sensitivitas sensor EL7900 terletak pada daerah warna kuning.
PERANCANGAN DAN PEMBUATAN SISTEM KONTROL LAMPU DENGAN SMS (SHORT MESSAGE SERVICE) I Made Satriya Wibawa; I Ketut Putra
Jurnal Ilmu Komputer Vol 9 No 2: September 2016
Publisher : Informatics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.488 KB)

Abstract

Telah dibuat sebuah sistem kontrol lampu dengan SMS (Short Message Service)berbasis komputer. Sistem ini menggunakan ponsel Siemens C35i sebagai modem untukpenerimaan SMS yang terhubung dengan komputer melalui port serial. SMS yang diterimadiolah oleh program kontrol lampu yang dibuat dengan memanfaatkan software Borland Delphi7.0. Program kontrol lampu akan mengaktifkan pin-pin data pada port paralel komputer, yangsemula tidak ada tegangan keluaran, setelah diaktifkan akan menghasilkan tegangan keluaransebesar 5 Volt untuk menjalankan rangkaian pengontrol lampu. Sistem ini mempunyai tiga carapengontrolan yaitu dengan SMS, dengan timer dan secara manual. Kontrol lampu ini bisadikontrol kapan saja tidak terbatas waktu dan dari mana saja tidak terbatas tempat asalkantempat tersebut masih dalam jangkauan jaringan komunikasi.
Study on Transport Properties of Chitosan Membrane in Different Types of Electrolytes Ni Nyoman Rupiasih; Made Sumadiyasa; I Ketut Putra; Ni Made Rasmini
Journal of Mathematical and Fundamental Sciences Vol. 50 No. 2 (2018)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2018.50.2.6

Abstract

In this study, the electrical properties of chitosan membrane in different types of electrolytes were investigated by analyzing the current-voltage (I"‘V) curve. The membrane used was chitosan membrane 2%. The different electrolyte solutions used were KCl, HCl, MgCl2, CaCl2 and AlCl3 at concentrations of 0.025 M. The I-V experiments were done using a two-compartment cell, which contained two working electrodes made of platinum connected to a DC current source and two Ag/AgCl reference electrodes connected to a voltmeter. All experiments were conducted at an ambient temperature of 28.7 °C. Water uptake (hydrophilicity) and Fourier transform infrared (FTIR) measurements were also studied in this research. The I-V curves show the ohmic behavior of the membrane. The resistance of the membrane was higher in the electrolyte solutions with larger Stokes radii and lower in the electrolyte solutions with larger diffusion coefficients, except in the HCl solution. These results indicate that the I-V curve shapes are affected by the type of electrolyte solution used for the chitosan membrane transport. The hydrophilicity of the membrane was improved after exposure to the electrolyte solutions. The FTIR analysis revealed a new peak at about 677 cm-1, which indicates the formation of C-Cl groups in the used membranes.
Penentuan Nilai Computed Tomography Dose Index (CTDIvol) dan Dose Length Product (DLP) Pesawat CT-Scan kepala pada kasus Stroke Non Hemoragik (SNH): Determination of Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP) values of head CT-Scan aircraft in cases of Non Hemorrhagic Stroke (SNH) Nabilla Fatimah; Gusti Ngurah Sutapa; Wayan Balik Sudarsana; Ni Nyoman Ratini; Putu Suardana; I Ketut Putra
Kappa Journal Vol 8 No 2 (2024): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25599

Abstract

A study was conducted on the determination of Computed Tomography Dose Index (CTDIvol) and Dose Length Product (DLP) values of head CT-Scan aircraft in cases of Non Hemorrhagic Stroke (SNH). The study was conducted at the Radiology Installation of Prof.Dr. I.G.N.G. Ngoerah Denpasar Hospital using secondary data from head CT-Scan examination results consisting of age, gender, kV, mAs, slice thickness, rotation time, CTDIvol and DLP in patients aged 40-80 years. This study aims to determine the local DRL value at Prof.Dr. I.G.N.G. Ngoerah Denpasar Hospital does not exceed the national DRL value. It was found that in female patients the CTDIvol value in male patients was 54.9 mGy and in female patients it was 53.11 mGy. While the DLP value of male patients was 1143 mGy.cm and in female patients it was 1118 mGy.cm. Based on the results of the analysis with a one-way t-test, it can be seen that the DRL values of CTDIvol and DLP in both male and female patients do not exceed the standards set by BAPETEN No.1211/K/V/2021, so it can be said that the CT-Scan at the Radiology Installation of Prof.Dr. I.G.N.G. Ngoerah Denpasar Hospital is still suitable for use in examinations, especially head examinations.
The Effect of Focus Film Distance Variation on Patient Absorbed Dose in Thorax Examination with Roentgen Machine in Radiology Installation of Sanjiwani Hospital Gianyar I Nyoman Yosua; Gusti Ngurah Sutapa; I Ketut Putra; Ida Bagus Suryatika; Hery Suyanto; Ida Bagus Alit Paramarta
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.v8i3.28113

Abstract

A study has been conducted on the effect of Focus Film Distance (FFD) variation on patient absorbed dose during thorax examination at the Radiology Installation of Sanjiwani Hospital, Gianyar. This study aims to determine the effect of FFD variation and the suitability of the radiation dose received by patients whether it is still within the limits of BAPETEN's decision. The X-ray machine used was Siemens Luminos Fusion Roentgen with the FFD variation method given a distance of 110 cm, 130 cm, and 150 cm in 30 patients. Dose measurements were carried out based on radiation exposure and analyzed according to BAPETEN standards. The results showed that the greater the FFD value, the smaller the absorbed dose received by patients. The highest absorbed dose obtained for FFD 110 cm was 0.3867 mGy, 130 cm was 0.2769 mGy, and 150 cm was 0.2079 mGy below the maximum limit of 0.4 mGy set by BAPETEN, so it is safe for patients. Statistical analysis of one-way t-test showed significant results, with thitung < ttabel. This indicates that FFD variation affects the absorbed dose, and all doses remain within safe limits. Thus, thorax examination at RSUD Sanjiwani Gianyar has met the established safety standards.
Measurement of Natural and Artificial Radiation as Well as Radiation Applications in The Field of Medical Physics at SMA Negeri II Kuta Badung Bali Gusti Ngurah Sutapa; I Gde Antha Kasmawan; Ida Bagus Made Suryatika; I Made Yuliara; Ni Nyoman Ratini; I Gusti Agung Ayu Ratnawati; Ni Luh Putu Trisnawati; I Ketut Putra; Ni Kadek Nova Anggarani
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.v8i3.28254

Abstract

The results of research that have been carried out, especially in the field of medical physics such as X-rays, have been widely utilized in the medical field, especially Radiology Units in Several General and Regional Hospitals. Thus, it is very important to be understood and known by the community, especially the community, in this case the students of SMA Negeri 2 Kuta. In 2022/2023, there are 507 male and 597 female students. Seeing these conditions, surveys and observations were carried out as a result, students had difficulty understanding physics because the physics subject matter was dense, memorized and mathematical. Seeing these results, it is necessary to carry out a new paradigm in physics learning. One of the more appropriate methods is to balance theory learning with field applications such as natural and artificial radiation measurements and applications in the field of medical physics. The results of natural radiation measurements in the classroom and outside the classroom were 0.605 ± 0.0024 and 0.182 ± 0.0008 mSv/year, respectively. The limit of the dosage rate allowed by BAPETEN is 1,000 mSv/year. Natural radiation identified in the classroom and outside the classroom is still declared safe
Determination of Critical Organ Effective Dose in Head CT Scan Examination at Bali Mandara Hospital Gusti Ngurah Sutapa; Winer Johan Bora; I Gde Antha Kasmawan; Ni Kadek Nova Anggarani; I Ketut Putra; Ni Putu Yuni Nurmalasari
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.v9i1.28471

Abstract

The study aims to determine the effective dose to critical organs in head CT scans at RSUD Bali Mandara and analyse the difference in effective dose between male and female patients and compare it with BAPETEN's normal threshold. Secondary data including current, voltage, CTDIvol, and DLP were collected and grouped by gender. The effective dose was calculated by multiplying DLP by the conversion factor K and CTDIvol by the organ weight factor (WT). The mean effective dose of male patients was 4.35 ± 0.68 mGy, while that of female patients was 4.00 ± 0.53 mGy. The effective dose of critical organs for males was 0.642 mGy and for females 0.613 mGy, with higher doses for males. Statistical analysis using t-test shows the value of tcount < ttable, which indicates that the effective dose in head CT scan examination at RSUD Bali Mandara is still within normal limits according to the BAPETEN DRL standard Number: 1211/K/V/2021.
Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique I Made Raditya Anandika Putra; Gusti Ngurah Sutapa; I Gde Antha Kasmawan; Ni Nyoman Ratini; I Made Satriya Wibawa; I Ketut Putra
Kappa Journal Vol 9 No 2 (2025): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.29017

Abstract

A study entitled Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique has been conducted. The study was conducted at the Radiotherapy Sub-Installation of Prof. Dr. I.G.N.G Ngoerah Hospital with the aim of determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90). Determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90) in cervical cancer patients is still within the recommended limits in ICRU Report 89. This study used ionizing radiation by inserting radioactive cobalt-60 using internal radiotherapy techniques, namely intracavitary brachytherapy. Before the irradiation process is carried out, there is a planning stage or Treatment Planning System (TPS). The reference for this research standard is for HRCTV of 95% -107% and for OAR bladder ≤80% rectum ≤75%. The average percentage of dose distribution received by HRCTV was 104.2% which is equivalent to 7.2 Gy which is still within the range of 95%- 107%, in the bladder it was 69.4% which is equivalent to 5.Gy which is still below the value ≤80%, and in the rectum it was 57% which is equivalent to 4.1 Gy which is still below the value ≤75%. The dose distribution value in HRCTV and OAR was still within the tolerance limit listed in the recommended value in GEC-ESTRO-ABS, and ICRU Report 89.
Co-Authors Bayun Kurniawan Bhakti Hardian Yusuf Gusnul H Yakin Gusti Ngurah Sutapa Hery Suyanto I Gde Antha Kasmawan I Gusti Agung Ayu Ratnawati I Ketut Sukrasa I Made Raditya Anandika Putra I Nyoman Yosua Ida Bagus Alit Paramarta Ida Bagus Made Suryatika Ida Bagus Suryatika Komang Ngurah Suarbawa Made Sumadiyasa Nabilla Fatimah Ni Kadek Nova Anggarani Ni Kadek Sugestiani Ni Luh Putu Trisnawati Ni Made Rasmini Ni Nyoman Rupiasih Ni Nyoman, Ratini Ni Putu Yuni Nurmalasari Putu Suardana Ryan Juliston Pangihutan Simanjuntak Satriya Wibawa, I Made Sukarasa, I Ketut Wayan Balik Sudarsana Winer Johan Bora Yuliara, I Made