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All Journal BULETIN FISIKA JPF : JURNAL PENDIDIKAN FISIKA Kappa Journal
Ni Luh Putu Trisnawati
Universitas Udayana
Astronomy Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics Other

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X-Ray Radiation Exposure Rate on the Walls of ATRO Bali Diagnostic Laboratory Nunung Purwati Dewi; Ni Luh Putu Trisnawati; Maghfirotul Iffah
BULETIN FISIKA Vol 24 No 1 (2023): BULETIN FISIKA February Edition
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2023.v24.i01.p07

Abstract

Research has been carried out on the rate of exposure to X-ray radiation on the walls of the ATRO Bali diagnostic laboratory. The dose of X-ray radiation exposure was measured using a surveymeter indoors and outdoors on the primary radiation retaining wall (A), secondary radiation retaining wall (B and D) and leakage radiation retaining wall (C) by setting the exposure factor at 80 kV tube voltage, 200 mA tube current and 0.160 seconds time. The results of the radiation exposure dose measurement on all walls are used to calculate the radiation exposure rate. The results of the calculation of the average rate of exposure to X-ray radiation on wall A is 1.106 × 10-7 mR/h, wall B is 1.600 × 10-7 mR/h, wall C is 6.217 × 10-8 mR/h and wall D of 7.668 × 10-8 mR/h. The results of the calculation of the rate of exposure to X-ray radiation on the walls outside the laboratory were obtained at 0 mR/hour. From these results it can be seen that the rate of exposure to X-ray radiation in the Bali ATRO diagnostic laboratory is still below the dose limit value (NBD) recommended by Bapeten Perka No. 8 of 2011 amounted to 0.57 mR/h for radiation workers and 0.03 mR/h for the community. Abstrak Telah dilakukan penelitian mengenai laju paparan radiasi sinar-X pada dinding laboratorium diagnostik ATRO Bali. Dosis paparan radiasi sinar-X diukur menggunakan surveymeter di dalam dan di luar ruangan pada dinding penahan radiasi primer (A), dinding penahan radiasi sekunder (B dan D) dan dinding penahan radiasi bocor (C) dengan mengatur faktor eksposi pada tegangan tabung 80 kV, arus tabung 200 mA dan waktu 0,160 detik. Hasil pengukuran dosis paparan radiasi pada suatu dinding digunakan untuk menghitung laju paparan radiasi rata-rata. Hasil perhitungan rata-rata laju paparan radiasi sinar-X pada dinding A sebesar 1,106 × 10-7 mR/h, dinding B sebesar 1,600 × 10-7 mR/h, dinding C sebesar 6,217 × 10-8 mR/h dan dinding D sebesar 7,668 × 10-8 mR/h. Hasil perhitungan laju paparan radiasi sinar-X pada dinding di luar laboratorium diperoleh sebesar 0 mR/h. Dari hasil tersebut terlihat bahwa laju paparan radiasi sinar-X di laboratorium diagnostik ATRO Bali masih di bawah nilai batas dosis (NBD) yang direkomendasikan oleh Perka Bapeten No. 8 tahun 2011 sebesar 0,57 mR/h untuk pekerja radiasi dan 0,03 mR/h untuk masyarakat.
Effect of Hokianti Mikro (Carmona Retusa) Leaves Extract Concentration on Dye Sensitized Solar Cell (DSSC) Kadek Ayu Rahmanuca Sabathiningsih; I Gusti Agung Putra Adnyana; Ni Luh Putu Trisnawati
BULETIN FISIKA Vol 24 No 1 (2023): BULETIN FISIKA February Edition
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2023.v24.i01.p09

Abstract

The research on DSSC fabrication has been carried out using Hokianti micro leaf (carmona retusa) as an anthocyanin-based natural dye. DSSC is made using a TiO2 semiconductor coated on indium tin oxide (ITO) conductive glass with variations in the concentration of Hokianti micro leaf dye of 60, 75 and 90 mg/mL and variations in the color of the irradiation lamp on the DSSC, namely red, orange, green, blue and white. In this study, the results of characterization by FTIR spectrophotometer showed that the sample contained an aromatic ring functional group that acted as anthocyanin. Analysis with SEM showed that the surface morphology of the sample contained piles of grains with clear boundaries so that the grain diameter size could be obtained was approximately (54.13±0.62) µm. Characterization of sample dye using UV-Vis spectrophotometer at three concentrations of 60, 75 and 90 mg/mL absorbs light in the UV region, namely in the wavelength range of 200-400 nm with absorbance values of 0.4271, 0.4275 and 0.5449. The maximum absorbance value occurs at a concentration of 90 mg/mL, which is 0.5449. The results of characterization I-V showed that variations in the sample dye concentration of 60, 75 and 90 mg/mL affected the efficiency of DSSC with the highest efficiency values in red, orange, green, blue and white light colors, respectively 0.272%, 1.008%, 1.536%, 1.632% and 2.080%. The maximum efficiency value occurs at a concentration of 90 mg/mL illuminated by white light of 2.080%. Abstrak Telah dilakukan penelitian tentang fabrikasi DSSC menggunakan daun Hokianti mikro (carmona retusa) sebagai dye alami berbasis antosian. DSSC dibuat dengan menggunakan semikonduktor TiO2 yang dilapiskan pada kaca konduktif Indium Tin Oxide (ITO) dengan variasi konsentrasi dye daun Hokianti mikro sebesar 60, 75 dan 90 mg/mL dan variasi warna lampu penyinaran pada DSSC yaitu merah, orange, hijau, biru dan putih. Pada penelitian ini, hasil karakterisasi dengan spektofotometer FTIR menunjukkan bahwa sampel mengandung gugus fungsi cincin aromatik yang berperan sebagai antosianin. Analisis dengan SEM memperlihatkan morfologi permukaan sampel terdapat tumpukan butiran-butiran dengan batas-batas yang jelas sehingga dapat diperoleh ukuran diameter butiran sekitar (54,13±0,62)?m. Karakterisasi dye sampel dengan menggunakan spektrofotometer UV-Vis pada tiga konsentrasi 60, 75 dan 90 mg/mL menyerap cahaya pada daerah UV yaitu pada rentang panjang gelombang 200-400 nm dengan nilai absorbansi berturut-turut sebesar 0,4271, 0,4275 dan 0,5449. Nilai absorbansi maksimum terjadi pada konsentrasi 90 mg/mL yaitu sebesar 0,5449. Hasil karakterisasi I-V menunjukkan bahwa variasi konsentrasi dye sampel sebesar 60, 75 dan 90 mg/mL berpengaruh terhadap nilai efisiensi DSSC dengan nilai efisiensi tertinggi pada warna lampu merah, orange, hijau, biru dan putih berturut-turut 0,272%, 1,008%, 1,536%, 1,632% dan 2,080%. Nilai efisiensi maksimum terjadi pada konsentrasi 90 mg/mL yang disinari warna lampu putih sebesar 2,080%.
STUDI PENGARUH MEDAN MAGNET TERHADAP JUMLAH SEL DARAH MERAH (ERITROSIT) PADA TIKUS PUTIH (RATTUSNPRVEGICUS) A A A Indra Sukma Sari Kusuma; Ni Luh Putu Trisnawati; I Nengah Artawan
BULETIN FISIKA Vol 15 No 1 (2014): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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Abstract

The research on the influence of magnetic field on the number of erythrocytes in the rat(Rattusnorvegicus) had done. The study was conducted using Rats aged approximately three monthswith a body weight between 150 gr-300 grinterval. Rats were given exposure to magnetic fieldsvarying from 1830 gauss to 5220 gauss interval by using500 and 500 gauss to 3500 gauss interval byusing765 for 6 hours in 3 days. The research has been showed there some data are the above resultspecially on the decrease of erythrocytes number. And other some data that has increased. The aboveresult speciallyon the decrease of erythrocytes number presumably the composition of it dominated byelements iron (Fe) were classified as ferromagnetic and non-linear are caused. On the recovery timehas been set the white rat data showed some recovery time close to 5 days, more than 5 days.
Karakterisasi Sampel Kuku Manusia dengan FTIR (Fourier Transform Infrared) melalui Metode Chemometric PCA dan Clustering Shinta Shaleha Juwita; Ni Luh Putu Trisnawati; Hery Suyanto
BULETIN FISIKA Vol 22 No 2 (2021): BULETIN FISIKA August Edition
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2021.v22.i02.p05

Abstract

Research has been carried out on the characterization of human nail samples by FTIR (Fourier Transform Infrared) using Chemometric PCA and Clustering methods. The sample used was left middle fingernail (TTK) from three people from one family (SKR) and two people who were not family (BKR). The test was carried out on TTK nail samples with a mass ratio of TTK nails with KBr 3:1. The results characterization by FTIR showed the presence of functional group O-H, C-H, C=O, N-H, C-N, P=O, C-O-C, nitrate, and nitrite in the TTK nail samples. The results of the analysis using the Chemometric PCA and Clustering methods showed that the TTK nail samples showed similarity in one family. This is based on the similarity of the types of molecules and their absorbance values. In addition, based on the results of PCA loading analysis, the wavenumber identity of the TTK nail samples were found in the range 1597-1479 cm-1.
STUDI PENGARUH LAMANYA PEMAPARAN MEDAN MAGNET TERHADAP JUMLAH SEL DARAH PUTIH (LEUKOSIT) PADA TIKUS PUTIH (RATTUS NORVEGICUS) Ni Komang Mas Sastika Wati; Ni Luh Putu Trisnawati; I Nengah Artawan
BULETIN FISIKA Vol 15 No 1 (2014): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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Abstract

On the research effect of duration of exposure to the magnetic field to the number ofleukocytes in the rat (Rattus Norvigicus) are observed. Magnetic fields interval used in thisstudy is 300 Gauss till 500 Gauss with varying exposure time there are 2 hours per day, 3hours, 4 hours, 5 hours and 6 hours each day for three days and the recovery period of 5days was assumed. Based on the results. The leukocytes number of the rats were givenexposure to a magnetic field tends to increase after a recovery period tends to decrease thenumber of leukocytes or nearly normal. For N > 1 means the recovery takes over five days,as the number of leukocytes is still far above normal. For N < 1 recovery time is estimatedthat nearly five days, as the number of leukocytes gradually approaching normal.
Identifikasi Bilangan Gelombang Daun Sirih (Piper sp.) Menggunakan Metode Spektroskopi Fourier Transform Infrared (FTIR) dan Principal Component Analysis (PCA) Ayu Anisa Damayanti; Ni Luh Putu Trisnawati; Hery Suyanto
BULETIN FISIKA Vol 22 No 2 (2021): BULETIN FISIKA August Edition
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2021.v22.i02.p02

Abstract

Research has been carried out on the identification of betel leaf (Piper sp.) wavenumbers using Fourier transform infrared (FTIR) spectroscopy and Principal Component Analysis (PCA) methods. The kinds of betel leaf used are red betel (Piper Crocatum), green betel (Piper Betle L.), and black betel (Piper Betle V.). Tests were carried out on betel leaf powder with a betel mass ratio of 4:1 KBr, 0.011528 g and 0.002882 g, respectively. The results of characterization by FTIR showed the presence of functional groups C-H, C = O, C = N, C = C, C-N, C-O, and C-Cl on red, green, and black betel leaves. The results of the PCA analysis provide the value of the wave number which is the identity of betel in the range 1670-1679 cm-1 and strengthened by the results of the K-Nearest Neighborhood (KNN) analysis.
Perancangan Pembangkit Listrik Tenaga Angin Dengan Turbin Ventilator Sebagai Penggerak Generator Made Padmika; I Made Satriya Wibawa; Ni Luh Putu Trisnawati
BULETIN FISIKA Vol 18 No 2 (2017): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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Abstract

A prototype of a wind power plant had been created using a ventilator as a generator spiner. This power plant utilizes wind speed as its propulsion. Electricity generated in the DC voltage form between 0 volts up to 7.46 volts. The MT3608 module is used to stabilize and raise the voltage installed in the input and output of the charging circuit. For instrument testing, the wind speed on 0 m/s up to 6 m/s interval used. Maximum output of this tool with a wind speed of 6 m/s is 7.46 volts.
PENGAWETAN UMBI BAWANG MERAH DENGAN RADIASI GAMMA CO-60 Titik Purwanti; Gusti Ngurah Sutapa; Ni Luh Putu Trisnawati
BULETIN FISIKA Vol 14 No 2 (2013): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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Abstract

Onion (Allium ascalonicum L) Preservation With Gamma Ray Co-60.This experiment hasbeen done to find out approach optimum dose that able to resist the growing of onion bud. Theresponse that exceeded is morfology through the growing of onion bud. The onion that is used is fromThailand variety with 5 month and average weight is 4.15 gramsfor 650 pieces. 650 pieces of onionirradiated by using gamma ray Co-60 IRPASENA irradiator at PTKMR BATAN, Pasar Jumat Jakarta.Iradiation dose is varieted by 50 Gy, 100 Gy, 150 Gy, and 200 Gy. Bud onion growing exceeded anddocumented once a week, and room temperature and room humidity noted once a day. During 2months experiment have been found the result that irradiated onion with 150 Gy dose have the slowestgrowing compare to other variety dose compared by 50 Gy, 100 Gy, 150 Gy and 200 Gy.
Mapping the Level of Lightning Strikes in Tabanan Regency Ni Putu Winda Meidyani; Katarina Putu Dian Rusmala; Ni Wayan Mita Restitiasih; Ni Luh Putu Trisnawati
Jurnal Pendidikan Fisika Vol 7, No 3 (2019): PENDIDIKAN FISIKA
Publisher : Universitas Muhammadiyah Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.91 KB) | DOI: 10.26618/jpf.v7i3.2141

Abstract

This study aims to map the level of lightning strikes in Tabanan regency, Bali. Data collection was carried out in January to June 2016. There were ten subdistricts that became the location of the study, they are, Marga District, Kediri, Tabanan, Baturiti, Selemadeg, East Selemadeg, West Selemadeg, Pupuan, Penebel and Kerambitan. Mapping process in this study utilizes natural breaks classification and is processed using the 2000 lightning program and ArcGIS 9.3. The results obtained showed the map of lightning which is a map of lightning-prone areas in the area of Tabanan Regency. From these results, the regions most affected by lightning strikes are located in Pupuan and West Selemadeg Districts, while the areas with the least lightning strikes are located in clan districts. Furthermore, the results of this study can be used by the public and related to as a reference and information in minimizing the impact of lightning in everyday life.Keywords: Tabanan Regency, lightning, ArcGIS, lightning detector, natural breaksPenelitian ini bertujuan untuk mememetaan tingkat sambaran petir di kabupaten Tabanan, Bali. Pengambilan data dilakukan pada bulan Januari sampai Juni 2016. Terdapat sepuluh kecamatan yang menjadi lokasi penelitian antara lain, Kecamatan Marga, Kediri, Tabanan , Baturiti, Selemadeg, Selemadeg Timur, Selemadeg Barat, Pupuan, Penebel dan Kerambitan. Pemetaan dalam penelitian ini  menggunakan  klasifikasi  natural  breaks  dan  diolah  dengan  menggunakan  program lightning 2000 dan ArcGIS 9.3. Hasil yang diperoleh dari peta sambaran petir ini merupakan peta daerah rawan sambaran petir di wilayah Kabupaten Tabanan. Dari hasil tersebut, wilayah yang paling banyak terkena sambaran petir terletak pada Kecamatan Pupuan dan Selemadeg Barat, sedangkan daerah yang sedikit sambaran petir terletak pada kecamatan marga. Selanjutnya, hasil penelitian ini dapat digunakan oleh masyarakat dan pihat terkait sebagai acuan dan informasi dalam meminimalisir dampak petir dalam kehidupan sehari-hari.Kata kunci: Kabupaten Tabanan, petir, ArcGIS, lightning detector, natural breaks
Penentuan Besar Dosis Pasien Pada Computed Tomography Scan Kepala Terhadap Faktor Risiko Terjadinya Katarak Menggunakan Metode Size-Specific Dose Estimate (SSDE) Shinta Palupi; Ni Luh Putu Trisnawati; Winardi Tjahyo Baskoro; Rozi Irhas
BULETIN FISIKA Vol 25 No 1 (2024): BULETIN FISIKA February Edition
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2024.V25.i01.p05

Abstract

Research has been done on determining the patient's dose on a Computed Tomography (CT) Scan of the head using the Size Specific Dose Estimate (SSDE) method and the risk factors for cataracts. SSDE values ??were obtained from Computed Tomography Dose Index Volume (CTDIvol), Anterior Posterior (AP) and Lateral (LAT) values. Data were obtained from 30 patients in the group of children aged 5-14 years and 30 patients in the adult group aged 15-50 years. The mean SSDE value for the children group was 52.387 mGy and the average value for the adult group was 49.664 mGy. The mean SSDE value of children is greater than that of adult patients, this is because the diameter of the head of the children group is smaller than the diameter of the head of the adult group. One organ that is sensitive to X-ray radiation is the eye lens. If the lens of the eye gets more than 500 Gy of radiation, it will increase the risk of cataracts. The risk factor for cataract was obtained from the SSDE value and the eye lens tissue weight factor was 0.12. The risk of cataract in this study is still below the standard value set by the ICRP in 2011 which is 500 mGy. While the percentage risk of cataract occurrence for the children group was 1.257% and for the adult group was 1.192%.
Co-Authors A A A Indra Sukma Sari Kusuma Adnyana, I Gusti Agung Putra Ayu Anisa Damayanti Budy Wiryawan Fiar Tri Santika Gusti Ngurah Sutapa Hery Suyanto I G. A. Widagda I Gde Antha Kasmawan I Gusti Agung Ayu Ratnawati I Ketut Putra I Made Yuliara I Made Yuliara I Nengah Artawan I Putu Tedy Indrayana Ida Bagus Made Suryatika Kadek Ayu Rahmanuca Sabathiningsih Katarina Putu Dian Rusmala Made Padmika Maghfirotul Iffah Ni Kadek Nova Anggarani Ni Komang Mas Sastika Wati Ni Nyoman, Ratini Ni Putu Winda Meidyani Ni Wayan Mita Restitiasih Nunung Purwati Dewi Pingki Setyowati Dewi Rozi Irhas Satriya Wibawa, I Made Shinta Palupi Shinta Shaleha Juwita Titik Purwanti Wayan Gede Suharta Winardi Tjahyo Baskoro