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All Journal MEDIA MEDIKA INDONESIANA BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Jurnal Teknik Sipil dan Perencanaan Jurnal Fisika Unand Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan Jurnal Arsitektur ARCADE Jurnal Arsir Journal of Physics and Its Applications Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jurnal Arsitektur ZONASI Cendekia Journal of Pharmacy Physics Communication Jurnal Arsitektur ARCADE
Wahyu Setia Budi
Department Of Physics, Faculty Of Science And Mathematics, Diponegoro University
Arts Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

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DISTRIBUSI FLUKS NEUTRON SEBAGAI FUNGSI BURN-UP BAHAN BAKAR PADA REAKTOR KARTINI Fatkhiyatul Athiqoh; Wahyu Setia Budi; Choirul Anam; Tri Wulan Tjiptono
Youngster Physics Journal Vol 3, No 2 (2014): Youngster Physics Journal April 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The effective multiplication factor (keff) and the flux distribution in the Kartini reactor which used Uranium Zirconium Hydride (UZrH) as fuel, pure water (H2O) as moderators and cooland has been analyzed using Monte Carlo simulation. The flux distribution analyzed by splitting core reactor become 5 rings (B, C, D, E and F). The effective multiplication factor (keff) and flux distribution calculated by MCNP 4C with burn-up variation 0%, 2,5%, 5%, 7,5%, 10%, 12,5%, 15%. The result shows that the critical condition obtained from burn-up rate 0% up to 5%. The highest value of flux distribution in the middle, at ring B and the value gets smaller towards to edge of reactor core.Keywords : flux distribution, keff, MCNP, Kartini reactor
ANALISIS PERBANDINGAN PARAMETER DAN PROFIL DOSIS MENGGUNAKAN PHANTOM STANDAR DAN TIDAK STANDAR Nora Fajria; Wahyu Setia Budi; Zaenal Arifin
Youngster Physics Journal Vol 3, No 4 (2014): Youngster Physics Journal Oktober 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

A study has been conducted to analyze the dose parameters are CTDI100, CTDIw, CTDIvol, DLP and dose profiles by using standard phantom (150 mm) and non-standard phantom (300 mm). This research utilized an abdomen phantom, CT Dose Profiler and software Ocean. Exposure factors in this study in accordance with the conditions of the abdomen routinely performed at the Hospital of the tube voltage 120 kV, current 350 mA, collimation 40 mm, and pitch 1.375. The detector is placed in the center of the phantom and scanning with variation of scan-length 150 mm and 200 mm in the standard phantom (150 mm) and the variation of the scan-length 150 mm, 200 mm, 300 mm in non-standard phantom (300 mm). The result obtained is the parameter dose values in the non-standard phantom (300 mm) are higher than standard phantom (150 mm). At a scan length of 150 mm, the difference in value is 4.825% CTDI100, CTDIw 4.858%, 4.823% CTDIvol, and DLP 4.820%. Meanwhile, the difference in the value of the parameter dose at the scan length of 200 mm is CTDI100 3.477%, 3.494% CTDIw, CTDIvol 3.510%, and DLP 3.512%. The resulting dose profile has similar peak-dose value but have a different width so that the dose profile in non- standard phantom (300 mm) is wider and having higher FWHM value than the standard phantom (150 mm) because non-standard phantom has longer scan length that lead to excessively scattered radiation.Keywords: CT Dose Profiler, dose profiles, scan length, standard phantom, non- standard phantom, CTDI100, CTDIw, CTDIvol, DLP, FWHM.
PERBANDINGAN KUALITAS CITRA CT SCAN PADA PROTOKOL DOSIS TINGGI DAN DOSIS RENDAH UNTUK PEMERIKSAAN KEPALA PASIEN DEWASA DAN ANAK Rozanah Rozanah; Wahyu Setia Budi; Zaenal Arifin
Youngster Physics Journal Vol 4, No 1 (2015): Youngster Physics Journal Januari 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The use of scaning protocol with high dose and low dose in CT scan would affect the quality of the images obtained. Because of the importance of good radiographic images in the enforcement of proper patient diagnosis, then performed an analysis of the image quality obtained from both protocols.Image quality assessment of high-dose protocols and low doses for routine head examinations carried out through performance analysis using the AAPM CT phantom performance, comparison of the value of GM conspicuity and Contrast to Noise Ratio (CNR) of the image of the patient as well as comparison of gray scale images through image histogram comparison phantom homogeneous and patient image histogram.Results of analysis of the performance of the two protocols by assessing the accuracy of the CT number, noise, low contrast resolution and spatial resolution showed that high-dose protocol has better performance than low-dose protocol. Image with high-dose protocol has an average GM conspicuity of 0.3863 and CNR 7.0105, while the image with a low dose of 0.4144 and 6.2725 at CNR. Comparison of gray scale image of the protocol through the image histogram comparison homogeneous phantom and patient image shows that the image of a low-dose protocol has variation of intensity gray value that is wider than high-dose protocol.Keywords: Computed Tomography, scaning protocol, image quality, GM conspicuity, CNR
Biodistribusi radiofarmaka Tc99m DTPA pada pemeriksaan renografi Dini Desita; Wahyu Setia Budi; Gani Gunawan
Youngster Physics Journal Vol 6, No 2 (2017): Youngster Physics Journal April 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Reasearch about biodistribution on 25 patients with renography examination using the technique of in-vivo and in-vitro in nuclear medicine has conducted. The purpose of this reasearch is to determinate the value of activity on examination of kidney and bladder, determine biodistribution Tc99m DTPA on examination of the kidney and bladder, futhermore to determine biological half-life time in the kidney. Reasearch carried out by using radioisotope Tc99m with DTPA which carrier substances for examination of the kidney. Renography examination is done by injecting Tc99m DTPA intravenously into the patient’s arm as much as 4 to 8 mCi conjuction with posterior imaging in the kidney area in 10 to 15 minutes by using a gamma camera. Based on percentage of activity in getting from both kidneys, the left kidney is higher in compared to the right kidney. As for the bladder in second patients increased very significant due to illness in patients with chronic renal failure so that the kidney function is not functioning properly and radiopharmaceutical absorbed more in the bladder. The results of biodistribution activity Tc99m DTPA percentage is high on the bladder. The results obtained from the average half-life time (0,235 ± 0,001) hours. While the results of Tc99m DTPA effective half-life time in the body of each patient in the range of 0,5 to 2 hours. First patients has a longest biological half-life time. Differences in the effective half-life time of each patient is affected by the elimination of biological or biological half-life time of each patient is different too.Keywords: Tc99m, DTPA, renography, biodistribution, effective half-life time.
Studi Metode Spektroskopi Plasma Laser Tekanan Rendah untuk Identifikasi Unsur Tembaga Ainul Ibnu Khotob; Wahyu Setia Budi; Ali Khumaeni
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The study on laser plasma spectroscopy has been conducted in Optoelectronics and Laser Laboratory, Physics Department, Diponegoro University, to identify the copper spectrums in samples of pure copper and copper alloys. In this study, some of the tested parameters are the comparison of ambient pressure, laser energy and types of sample. In comparative study on ambient pressure, the researcher compared the plasma laser and the spectrum that is constructed of pure copper at the pressure of 1 atm and 3 Torr with PFN 85%. The study on varieties of laser energy was conducted with the PFN values used on pure copper sampel which is at 3 Torr condition, between the range of 75%, 80%, 85%, 90% and 95%. In the test on sample types, the samples used are pure copper, commercial copper, brass key (Cu-Zn) and bronze coin (Cu-Al), at the pressur of 3 Torr and PFN 85%.. As the result, the plasma on ambient pressure of 3 Torr were formed bigger than at 1 atm and it has more clear and better colored spectrum. The higher value of laser’s PFN also lead to greater formed plasma. The dominant and consistent spectrums formed are Cu I 521,82 nm, Cu I 515,32 nm, Cu I 510,56 nm and Cu I 406,26 nm. Based on the calculation conducted by using the Boltzmann plot method, the value f plasma’s temperature that has been formed is rangen in value of 9503,37 – 10906,54 Kelvin.
Penentuan persentase uptake radiofarmaka Tc99m Sulfur Colloid pada sidik hati (Liver scan) Istifadatun Ni’amah; Wahyu Setiabudi; Fadil Nazir
Youngster Physics Journal Vol 6, No 1 (2017): Youngster Physics Journal Januari 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Based on data from the World Health Organization, showed that liver disease in Indonesia is in endemic high ranks. Early diagnosis of liver disease is very necessary for prevention and minimize the risk of liver disease. Research has been conducted on 28 patients on the biodistribution test of the liver scan using in vivo nuclear medicine technique that aims to determine the accumulation of counts Tc99m Sulfur Colloid in the body's metabolism, the percentage uptake activity in the heart, spleen, kidney, bladder, and liver as the target organ. The study was conducted using Tc99m obtained from elution of Mo99 generator and mixed with sulfur colloid. Tc99m allows a radiopharmaceutical can be detected and known location and sulfur colloid to determine where the target of radiopharmaceutical is accumulated. Liver scan is performed by injecting Tc99m Sulfur Colloid intravenously into the patient's arm as much as 2- 6mCi. Furthermore, the anterior posterior planar imaging in abdominal cavity at 5 minutes and 1 hour after injection of the patient by using a gamma camera. Determining the state of liver function can be seen from the percentage uptake activity at 5 minutes and 1 hour, the shape and size of the heart which can be evaluated from the image obtained. Biodistribution of  Tc99m Sulfur Colloid showed a high percentage of the liver after 5 minutes and 1 hour. Based on the value percentage uptake activity obtained, there were 18 patients with a normal liver and 10 patients with abnormal liver. Keywords: Tc99m Sulfur Colloid, liver scan, nuclear medicine, gamma camera
PENENTUAN WAKTU PARO BIOLOGI TC99M MDP PADA PEMERIKSAAN BONE SCANNING Titi Purwati; Wahyu Setiabudi
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Nuclear medicine is a branch of medical science to know the anatomy and physiology of the body. One type of nuclear medicine examination is the examination of bone scanning. According to UNSCEAR (United Nations Scientific Committee on the Effects of Atomic), examination of bone scanning is a type of diagnostic examination which has the largest contribution. Examination of bone scanning using a radiopharmaceutical activity is very high around 320-740 MBq. Because the activity of a given patient is very high, it is necessary to note a half-life in bone biology for radiation protection purposes. Has conducted research on 35 patients in the examination bone scanning to determine the biological half time and the correlation between activity and biological half time. Radioisotopes are used in this examination is Tc99m with farmaka MDP kit (Methylene Diphosponat) with a half-life of 6.03 hours. On examination, the MDP Tc99m radiopharmaceutical is injected intravenously into the patient's arm as much as 15-20 mCi. Furthermore, patients will wait for ± 3 hours and after the enumeration for 10 minutes. Imaging results obtained from the average of the beginning of 627493360 Bq activity and activity after 3 hours of 15290043.495 Bq. Then from the calculation of activity against time t obtained decay constant is effective with an average of 0.271 h1, the mean decay constants of physics-1 and the average 0,115 hours of biological decay constant of 0.156 h-1. The decay obtained from biological half time with an average of 4.434 hours. In this study also found a correlation between the activity after 3 hours with a half-life of -0.94 biology, because the correlation value close to -1 (negative one) then the relationship of these variables have a strong negative correlation. 
Calculation of Absorption Dose Value using MIRD Method with Cobalt 57 MIBI for Four Body Organs Asep Yoyo Wardaya; Wahyu Setia Budi; Ali Khumaeni; Chorirul Anam; Gani Gunawan
Journal of Physics and Its Applications Vol 2, No 1 (2019): November 2019
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v2i1.6180

Abstract

MIRD has developed methods, assumptions, models, and mathematical formulae for estimating internal radiation doses from the injected radiopharmaceuticals into the body. This study aims to determine the radiopharmaceutical distribution of Cobalt 57 MIBI in patients identified as having breast cancer by using an oncology examination with MIRD method on 4 patient's organs with some time variations. The four organs of the patient's body are the heart, thyroid, kidney, and liver. The MIRD method developed to calculate the absorption dose of each organ is the product of the cumulative activity and the S factor of each organ studied. The results showed that the highest uptake dose in these patients was in the thyroid and kidney organs, and then followed by the heart and liver. These results indicate that the thyroid and kidney organs are the most vulnerable organs by the method of injecting radiopharmaceutical doses into the body of breast cancer patients.
KAJIAN PENCAHAYAAN ALAMI RUANG BACA PERPUSTAKAAN UNIVERSITAS INDONESIA Fajar Dewantoro; Wahyu Setia Budi; Eddy Prianto
Jurnal Arsitektur ARCADE Vol 3, No 1 (2019): Jurnal Arsitektur ARCADE Maret 2019
Publisher : Prodi Arsitektur UNIVERSITAS KEBANGSAAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31848/arcade.v3i1.162

Abstract

Abstract: An architectural work can be seen in terms of benefits for the community where it can provide something to support life and advance the development of the surrounding environment. In this case the case study raised was at the University of Indonesia Library, where the library was very supportive of students on campus and outside the campus.The problem discussed in this study is reviewing a tropical architectural work applied to the library, and want to know how the concept affects natural lighting in the University of Indonesia's library reading room. The study also aims to evaluate how much light intensity is in the reading room of the University of Indonesia library. In this study the method used describes and reviews all other data and information, from direct or indirect observation. This analysis uses quantative analysis by comparing the existing conditions in the field with the study and information obtained from the literature. Based on the research, it was found that in some reading room areas that had natural enlightenment, there were recommendations that were in accordance with the standards and were not yet appropriate. Therefore some additional studies are needed in designing lighting. This research is expected to provide input on natural lighting of a building that is calculated using assisted software or measuring instruments in the field.Keyword: UI Library, Reading Room, Natural Lighting.Abstrak: Suatu karya arsitektur itu dapat dilihat dari segi manfaat bagi masyarakat dimana dapat memberikan sesuatu untuk menunjang kehidupan dan memajukan pembangunan lingkungan sekitar. Dalam hal ini studi kasus yang diangkat adalah pada Perpustakaan Universitas Indonesia, dimana perpustakaan ini sangat menunjang mahasiswa dalam kampus maupun luar kampus.Permasalahan yang dibahas dalam penelitian ini yaitu mengkaji sebuah karya arsitektur tropis diterapkan pada perpustakaan, serta ingin diketahui bagaimana pengaruhnya konsep tersebut terhadap pencahayaan alami di ruang baca perpustakaan Universitas Indonesia tersebut. Penelitian ini juga bertujuan mengevaluasi seberapa besar intensitas cahaya pada ruang baca perpustakaan Universitas Indonesia. Pada penelitian ini metode yang digunakan menguraikan dan mengkaji semua data dan informasi lain, dari observasi langsung maupun tidak langsung. Analisa ini menggunakan analisa kuantatif dengan membandingkan antara keadaan yang ada dilapangan dengan kajian dan informasi yang didapat dari literatur. Berdasarkan penelitian didapatkan hasil bahwa pada beberapa area ruang baca yang mendapatkan pencahyaan alami, terdapat penchayaan yang sudah sesuai dengan standar dan belum sesuai. Oleh sebab itu diperlukan beberapa pengkajian tambahan dalam mendesain pencahayaan. Penelitian ini diharapkan dapat memberikan masukan mengenai pencahayaan alami sebuah bangunan yang dihitung menggunakan software berbantu atau alat ukur di lapangan.Kata Kunci: Perpustakaan UI, Ruang Baca, Pencahayaan Alami.
PENGARUH BAHAN MATERIAL DINDING RUMAH HEBEL DAN BATU BATA TERHADAP KONDISI TERMAL RUANG DALAM DI PERMUKIMAN PADAT PENDUDUK Jundi Jundullah Afgani; Gagoek Hardiman; Wahyu Setia Budi
Jurnal Arsitektur ARCADE Vol 3, No 1 (2019): Jurnal Arsitektur ARCADE Maret 2019
Publisher : Prodi Arsitektur UNIVERSITAS KEBANGSAAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1151.103 KB) | DOI: 10.31848/arcade.v3i1.165

Abstract

Abstract: The conditions of houses in densely populated areas vary, some use brick and Hebel materials. the high density of an area makes air movement not work properly so that the temperature in the area of the region increases and will have an effect on the inner space of the houses in the settlement. therefore the purpose of this study is to find out the type of material that provides thermal comfort in indoor space in densely populated settlements. used in this study is a quantitative method with direct measurements in the field for 11 hours, to find out the temperature, humidity, and air movement, the results will be compared with the theory of thermal comfort standards of mom and wiesebron.Keyword: Thermal Comfort, House Wall, Densely SettlementAbstrak: Kondisi dari rumah-rumah yang berada di daerah padat penduduk bermacam-macam, ada yang menggunakan bahan material batu bata dan juga hebel. Tingginya kepadatan suatu wilayah membuat pergerakan udara menjadi tidak dapat berjalan dengan baik, sehingga suhu pada wilayah wilayah tersebut meningkat dan akan berefek pada ruang dalam dari rumah-rumah yang ada di permukiman tersebut. Oleh karena itu Tujuan dari penelitian ini yaitu untuk mengetahui jenis material yang memberikan kenyaman termal pada ruang dalam rumah di permukiman padat penduduk. Metode yang digunakan didalam penelitian ini yaitu metode kuantitatif dengan pengukuran langsung di lapangan selama 11 jam untuk mengetahui temperature, kelembaban dan pergerakan udara, hasilnya nanti akan dibandingkan dengan teori standar kenyamanan termal Mom dan Wiesebron.Kata Kunci: kenyamanan Termal, dinding rumah, Permukiman padat.
Co-Authors Ade Ika Susan Afgani, Jundi Jundullah Agung Dwiyanto Ahmad Mutohar Ainul Ibnu Khotob Alan Tanjung Aji Prastowo Alfian Rizani Ali Khumaeni Anis Nila Kusuma Anugrah Ariyani S. Arif Fahmi Arifah, Dwi Intan Asep Yoyo Wardaya Astrihasna Shafa Bambang Haris Suhartono, Bambang Haris Choirul Anam Choirul Anam AM Diponegoro Chorirul Anam Dewandaru, Ardian Dewantoro, Fajar Dewantoro, Fajar Dhahryan Dhahryan Dini Desita Dwi Siwi Retnoningsih Eddy Prianto Eko Hidayanto Erni Setyowati Fadil Nazir Fajar Arianto Fatkhiyatul Athiqoh G. B. Suparta Gagoek Hardiman Gagoek Hardiman Gani Gunawan Gani Gunawan Handayani, Liska Tri Harianja, Bernard Hendrika Liana Sari Heri Sugito Heri Sutanto I Wayan Ari Makmur Istifadatun Ni’amah Jundi Jundullah Afgani K Sofjan Firdausi K. Sofjan Firdausi Kesawa Sudarsih Ketut Sofjan Firdausi, Ketut Sofjan Kusminarto Kusminarto Kusminarto Kusminarto Kusminarto Kusminarto Kusworo Adi Liska Tri Handayani Maesadji Tjokro Nagoro Maesadji Tjokro Nagoro Maliki Maliki Maria Carizza Pandora Raharjo Masrokan Masrokan Masrokan, Masrokan Michelson Fahrurazi Much Azam Muhamad Adi Muharam Budi Laksono, Muharam Budi Nora Fajria Nur Dwi Prasetyo Pandora Raharjo, Maria Carizza Prasetyo Basuki Priyono, Setyo Purwanto Purwanto Rini Shintawati Rozanah Rozanah Rusmaharani, Diyah Slamet Riyanto Suhardi Suhardi Sunarsih Sunarsih Supriyati Supriyati Suryono Suryono Susila Wardaya, Susila Susilo Susilo Susilo Susilo Susilo Susilo Sutiah Sutiah Sutrati Melissa Malik Taqwim S, M Ainut Titi Purwati Tri Wulan Tjiptono Tri Wulan Tjiptono Very Richardina Weirna Yusanti Wibowo, Danang Rujito Widiastuti, Ratih Wulandhari Wulandhari Zaenal Arifin