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All Journal Bumi Lestari BULETIN FISIKA Indonesian Physical Review Kappa Journal
Yuliara, I Made
Physics Departement, Faculty Of Mathematics And Science, Udayana University, Denpasar, Bali, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Physics Other

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STUDI PERSAMAAN EMPIRIS PERCEPATAN TANAH BERBASIS DATA GEMPA BUMI DI WILAYAH BALI PERIODE 2008-2016 Putra Wiguna, I Putu Arix; Yuliara, I Made
Kappa Journal Vol 3, No 2 (2019): KAPPA JOURNAL
Publisher : Universitas Hamzanwadi

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Abstract

The earthquake was the most common natural disaster in Indonesia, one ofwhich was the Province of Bali. The southern part of Bali is a meeting area of two earth plates (subduction zones) between the Eurasian and Indo-Australian plates and in the northern region there is a back arc thrust fracture which results in earthquake frequencies in the Bali area. One of the parameters that is very instrumental in determining the level of damage to land and buildings that occur on the surface of the earth due to earthquake shocks is the acceleration  of the soil. A research has been conducted which aims to find out the empirical equation of land acceleration for Bali in the 2008-2016 period, namely by determining the empirical equation of land acceleration (PGA) conducted  using magnitude parameters, hypocenter distance and PGA (observation) values in 2008-2016 with coordinates 70-120 LS and 1130-1180 BT. Through the regression analysis approach, to obtain the empirical equation of land acceleration in the Bali region  is  ???10(???)  =  (?1,89)  ???10(?) +  (0,71) ?? + 1,18. Then several approaches and correlation analysis are performed to see the compatibility of the new empirical equation with the existing one.
Studi Persamaan Empiris Percepatan Tanah Berbasis Data Gempa Bumi Di Wilayah Bali Periode 2008-2016 I Putu Arix Putra Wiguna; I Made Yuliara
Kappa Journal Vol 3, No 2 (2019): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v3i2.1613

Abstract

The earthquake was the most common natural disaster in Indonesia, one ofwhich was the Province of Bali. The southern part of Bali is a meeting area of two earth plates (subduction zones) between the Eurasian and Indo-Australian plates and in the northern region there is a back arc thrust fracture which results in earthquake frequencies in the Bali area. One of the parameters that is very instrumental in determining the level of damage to land and buildings that occur on the surface of the earth due to earthquake shocks is the acceleration  of the soil. A research has been conducted which aims to find out the empirical equation of land acceleration for Bali in the 2008-2016 period, namely by determining the empirical equation of land acceleration (PGA) conducted  using magnitude parameters, hypocenter distance and PGA (observation) values in 2008-2016 with coordinates 70-120 LS and 1130-1180 BT. Through the regression analysis approach, to obtain the empirical equation of land acceleration in the Bali region  is  ð‘™ð‘œð‘”10(𝑃𝐺𝐴)  =  (−1,89)  𝑙𝑜𝑔10(𝑅) +  (0,71) 𝑚𝑏 + 1,18. Then several approaches and correlation analysis are performed to see the compatibility of the new empirical equation with the existing one.
Pemberdayaan Kelompok Lanjut Usia melalui Pengenalan Teknologi Pembuatan Pupuk Organik Cair (POC) sebagai Upaya Bentuk Kepedulian terhadap Lingkungan I Gde Antha Kasmawan; Gusti Ngurah Sutapa; I Made Yuliara
Bumi Lestari Journal of Environment Vol 17 No 2 (2017)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2017.v17.i02.p01

Abstract

In order to avoid post power syndrome, the elderly who have a hobby of farming / gardening can be empowered through the introduction of LOF (liquid organic fertilizer) making technology and its application. The aim is for the elderly to understand the technology of making organic fertilizers that are lightweight, useful and entertaining as well as for them to feel contribute in maintaining the environment. The training method applied is a combination of interactive lecture and practice methods. Based on these methods, have succeeded in growing their creativity in making LOF and feel comforted on the results obtained. Successful LOF products contained nitrogen, phosphorus and potassium (NPK) of 146,701 mg / L, 0.741 mg / L, and 0.035 mg / L, respectively, and magnesium (Mg) and calcium (Ca) of 86.332 mg / L and 1.970 mg / L. The application of LOF products has been done on the orchid plants (Phalaenopsis amabilis) with satisfactory results. Thus, the mastery of LOF making technology and its application will reduce the dependence of chemical fertilizer use and replace it with homemade organic fertilizer so it can contribute in maintaining health and environmental sustainability.
Pengenalan Pola Reflektansi Spektral Mangrove Di Teluk Benoa Sebagai Indikator Perubahan Kerapatan Berbasis Citra Landsat 8 Wiwik Kurniawati; I Made Yuliara; Ni Nyoman Ratini; Windarjoto Windarjoto
BULETIN FISIKA Vol 23 No 1 (2022): 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.2022.v23.i01.p07

Abstract

Studies have been conducted on the introduction of spectral reflectance patterns as an indicator of changes in mangrove density distribution using landsat 8 imagery time series data, in benoa bay area, Bali. Methods and analyses use spectral reflectance and the Vegetation Normalized Difference Vegetation Index (NDVI). The results of determining the value of spectral reflectance show that, changes in mangrove spectral reflectance patterns in Benoa Bay from 2017-2020 have decreased and increased for each band. In the pattern of reflectance band 5 can be used as a reference there has been a reduction in mangrove area, where the smaller the value of reflectants in band 5 in 2017-2020 shows a reduction or change in mangrove density in the year is getting larger. Based on the data of NDVI vegetation index image distribution in 2017-2020 obtained wide cover per category that there is a reduction in mangrove area from 2017 to 2018 of 36.72 ha, but in 2019 mangrove area increased considerably from 2018 of 60.82 ha. In 2020 the mangrove area again experienced a fairly drastic reduction of 181.51 ha. The area recorded is still overgrown with mangroves in 2020 only amounting to 852.39 ha.
ANALISIS JAM MAKAN PADA DAUN TANAMAN SAWI HIJAU (Brassica rapa var. parachinensis L.) DENGAN TEKNIK PERUNUT RADIOAKTIF 32P Nurfaizah Nurfaizah; I Gst. Ngurah Sutapa; I Made Yuliara
BULETIN FISIKA Vol 17 No 2 (2016): 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

It has been conducted research on the analysis feeding hours of green cabbage leaves (Brassica rapa var. parachinensis L.) with a radioactive tracer technique 32P . The feeding hour treatment plants conducted were at 07.00, 09:00, 11:00, 13:00 , 15:00 and 17:00 . The amount activity of Isotpe 32P applied to 483 µCi/150 ml (168,542 x 103 Bq/ 150 ml) / plant, counting values activity of green cabbage leaves using Radiation Alert Inspector . Data activity was analyzed by ANOVA statistical analysis using SPSS 17.0 version, and Tukey's test with 95% significance result. Results of the analysis show that feeding hours (fertilization) of green cabbage leaves was the most effective at 09.00. Radioactive concentration at 09.00 was different to other hours treatments significantly.
Analisis Dosis Efektif Pada Pemeriksaan Computer Tomography (CT) Scan Kepala Di RSUD Sanjiwani Gianyar Putu Gede Agus Krisna Yogantara; Gusti Ngurah Sutapa; I Made Yuliara
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.p01

Abstract

Effective dose analysis research has been carried out on head CT scan. The research was conducted at RSUD Sanjiwani Gianyar using secondary data from head CT scan, namely the value of CTDIvol, DLP, current, voltage and scan length. Data are grouped according to age and gender, namely ages 0-4 years, 5-14 years, and over 14 years. The effective dose value is obtained from the product of the DLP value with the conversion factor k. Effective dose analysis was performed using standard DRL values ??for Bapeten Head regulation and ICRP 102. The effective dose of each group was obtained, namely male patients aged 0-4 years were 2.34±0.04 mSv and female patients were 2.4±0.28 mSv; age 5-14 years, male patients were 1.96±0.45 mSv and female patients were 1.89±0.32 mSv; age over 14 years, male patients were 1.88±0.35 mSv and female patients were 1.8±0.35 mSv. The values are still in accordance with the standard determined by Bapeten and ICRP and the CT Scan plane is still suitable for use for a CT scan of the head.
Distribution Land Surface Temperature (LST) Using Spatial Method Based on Landsat 8 Images in Manggarai, Nusa Tenggara Timur in Periode of June-July 2015-2019 Lorensia Yatimas Murni; I Made Yuliara; Windaryoto Windaryoto
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.p01

Abstract

Population growth and rapid development have resulted in reduced availability of vacant/open vegetated land, thus affecting changes in land surface temperature (LST). Land surface temperature is the temperature on the earth's surface which is the result of the reflection of objects recorded by satellite images at a certain time. In this study, LST processing was carried out in Manggarai Regency, NTT for the period June July 2015-2019, using a spatial method based on Landsat 8 images. From the processing results, the LST distribution, minimum and maximum temperatures were obtained. The highest LST distribution in Manggarai Regency, NTT does not only occur in the downtown area, namely Langke Rembong District, but also occurs in suburban areas, namely the Northeast of Reok District and Wae Ri'i District. The highest LST in Manggarai Regency, NTT was on the image on July 7 2018 which reached 42,312 oC while the lowest LST was on the image on July 4, 2017 of -59,307 oC. When viewed from the average LST obtained, the highest average LST is in the image on July 7 2018 with an average LST of 25.683 oC while the LST with the lowest average is in the image on July 4, 2017 with an average LST of 5,218 oC. Abstrak Pertumbuhan penduduk dan pembangunan yang pesat, mengakibatkan tersediaannya lahan kosong/terbuka yang bervegetasi berkurang, sehingga berpengaruh terhadap perubahan land surface temperature (LST). Land surface temperatur adalah temperatur pada permukan bumi yang merupakan hasil pantulan objek yang terekam oleh citra satelit pada waktu tertentu. Pada penelitian ini telah dilakukan pengolahan LST Kabupaten Manggarai NTT periode Juni-Juli 2015-2019, menggunakan metode spasial berdasarkan citra Landsat 8. Dari hasil pengolahan maka diperoleh distribusi LST, temperatur minimum dan maksimumnya. Distribusi LST tertinggi di Kabupaten Manggarai NTT tidak hanya terjadi di daerah pusat kota yakni Kecamatan Langke Rembong, tetapi juga terjadi di daerah pinggiran yaitu Timur Laut Kecamatan Reok dan Kecamatan Wae Ri’i. LST tertinggi di Kabupaten Manggarai NTT berada pada citra tanggal 7 Juli 2018 yang mencapai 42,312 oC sedangkan LST terendah berada pada citra tanggal 4 Juli 2017 sebesar -59,307 oC. Jika dilihat dari rata-rata LST yang diperoleh, maka rata-rata LST tertinggi berada pada citra tanggal 7 Juli 2018 dengan LST rata-rata sebesar 25,683 oC sedangkan LST dengan rata-rata terendah berada pada citra tanggal 4 Juli 2017 dengan rata-rata LST sebesar 5,218 oC.
Perbandingan dan Analisis Pola Spasial Curah Hujan Data IMERG (Integrated Multi-Satellite Retrievals for GPM) dan Data Observasi di Provinsi Bali Desy Yunita samosir; I Made Yuliara; Rakhmat Prasetia
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.p03

Abstract

Limitations of observational data such as insufficient data length, incomplete, and uneven station distribution make it difficult to analyze and predict rain, so it requires supporting instruments such as satellites to provide a better and broader picture of rainfall distribution. However, it is necessary to test the accuracy of satellite data because the resolution and conditions of each region are different. This research aims to validate IMERG rain data against observation data in the 2015 El Nino period using observation rainfall data from BMKG Negara and IMERG data from GPM satellite at 12 rain points in Bali Province. The analytical method used is quantitative statistics, the calculation of errors and correlations and the comparison of the spatial pattern of the two data. The results of the analysis of the spatial pattern of the IMERG data show that, there was a decrease in rainfall from May to July, but the rainfall increased into August, and again experienced a decline entering the months of September to December where the same pattern was also shown from the results of the spatial pattern analysis on the Observation data. The decrease in rainfall in the May-December 2015 period was a strong El Nino effect as evidenced by the results of the correlation analysis of the SOI index on rainfall which showed a fairly strong correlation value, namely 0.55.The validation of IMERG data on monthly observation data showed that the average correlation was sufficient strong is 0.42 and analysis per rain post shows a weak correlation namely 0.31, which means that data IMERG is not yet accurate as an alternative to the observation rainfall data in Bali Province.
ANALYSIS OF THE EFFECT OF THE X-RAY TUBE CURRENT ON UNIFORMITY IMAGE NOISE VALUES Anastasya Jessning Gamalita Mberato Mberato; Ni Nyoman Ratini; I Made Yuliara; Rozi Irhas
Indonesian Physical Review Vol. 6 No. 1 (2023)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v6i1.183

Abstract

This research aimed to evaluate the effects of the X-ray current tube on the uniformity value of CT image noise. This research used the CT images of Siemens head water phantom. The phantom was scanned with a Siemens Somatom Scope CT scanner for various current tubes (i.e., 180 mAs, 200 mAs, 220 mAs, 240 mAs, and 260 mAs) on tube voltage 110 kV, slice thickness 3 mm, and FOV 240 mm. The uniformity values in CT image noise were analyzed using the standard deviation value (SD). The SD was measured by the ROI process in 5 different locations, in the center and at 3 o'clock, 6 o'clock, 9 o'clock, and 12 o'clock on the images CT. Based on the result of a simple linear regression test using IBM SPSS ver 25, it was found that the current tube significantly affected the uniformity value of image noise (r2=0,9768, p<0,05). This result showed that increasing the current tube can reduce image noise uniformity. The highest image noise uniformity value was at a current at 180 mAs with 0,217 HU, and the lowest was at 260 mAs with 0,031 HU. This result also shows that all the values are less than 2 HU and still within the acceptable limit by the BAPETEN standard regulation.
Co-Authors Anastasya Jessning Gamalita Mberato Mberato BUDI SETIADI DARYONO Budy Wiryawan Desy Yunita samosir Gusti Ngurah Sutapa I Gde Antha Kasmawan I Putu Arix Putra Wiguna Lorensia Yatimas Murni Neviaty P Zamani Ni Komang Tri Suandayani Ni Nyoman, Ratini Nurfaizah Nurfaizah Putra Wiguna, I Putu Arix Putu Gede Agus Krisna Yogantara Rakhmat Prasetia Rozi Irhas Suandayani, Ni Komang Tri Trisnawati, Ni Luh Putu Windarjoto Windarjoto Windarjoto Windarjoto Windarjoto, Windarjoto Windaryoto Windaryoto Windaryoto, Windaryoto Wiwik Kurniawati