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All Journal International Journal of Advances in Applied Sciences Reaktor BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Edumatsains Journal of Physics and Its Applications Indonesian Journal of Electrical Engineering and Computer Science
Eko Hidayanto
Departemen Fisika, Fakultas Sains Dan Matematika Universitas Diponegoro Jl. Prof. Soedarto, SH, Tembalang, Semarang Telp./Fax. (024)74680822/(024) 74680822
Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics

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ANALISIS DOSIS PAPARAN RADIASI PADA INSTALASI RADIOLOGI DENTAL PANORAMIK Candra Ancila; Eko Hidayanto
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

A research on the analysis of radiation dose exposure in panoramic dental radiology installations in Government General Hospital dr Kariadi Semarang, this study aims to identify and analyze the radiation dose received by workers and the general public and determine the effectiveness of radiation shielding in dental panoramic installations. Measurements were carrried out at the time of exposure using dental panoramic with surveymeter babyline. Measurements of doses exposure taken at the point operator station, waiting rooms and in the corridors employess and panoramic dental space, while measuring the effectiveness of radiation shielding in the door of the room and the operator station. Dose measurement result obtained in the operator station amounted 5,83 µSv/h, lounge area 2,4 µSv/h and at the corridor employees are not detected exposure dose when exposure using dental panoramic. For the effectiveness of radiation shielding door of the room is 12,24 % and in the operators station is 82,29 %. Can be concluded that the operator room and corridor employess fairly save from exposure to excessive radiation, while the lounge area has a value that approaches the dose limits. For radiation shielding door of the room is small and the effectiveness of the operator room is large.
ANALISA PENGARUH FAKTOR EKSPOSI TERHADAP ENTRANCE SURFACE AIR KERMA (ESAK) Muahamad Irsal; Eko Hidayanto; 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

The research has been analyzed of the effect of exposure factors at the entrance surface air kerma (ESAK) of the thorax radiographs. This research uses anthropomorphic phantom, multipurpose detectors, FFD 100 cm, with radiation field 25 cm × 25 cm. irradiation conditions is given by the variation of expose factors using tube voltage 50-100 kV and tube current-time 2-20 mAs. The results of research showed that the effect of the tube voltages to the entrance surface air kerma experience is increase a specific approximated by an polynomial equation with a correlation coefficient value R2 = 1 and the variation of the tube current-time increased linearly approximated by a approach linear equation R2 = 1, uses of tube current time under 4 mAs with resulted lower the entrance surface air kerma based on IAEA Safety Series No. 115 (1996) is 0.4 mGy at examination of thorax radiographic, and conducted a calculation uncertainly  value of every expose factors using variations of tube voltage and tube current-time based on scenarios three of IAEA Technical Report Series No. 457(2007).Keywords: entrance surface air kerma, thorax radiography, the tube voltage, tube current-time, phantom anthoropomorphic.
Analisis keakuratan verifikasi dosis dengan menggunakan perbandingan phantom standar dan phantom replika Ardian Handoko; Hidayatullah Hidayatullah; Eko Hidayanto; Very Richardina
Youngster Physics Journal Vol 7, No 1 (2018): Youngster Physics Journal Januari 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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In the medical and radiology, phantom used as a simulator for the human body for radiotherapy activities. Most of them use homogeneous or standard phantom that have density same as water. This research was done because in real case, in the human body not only consists of soft tissue, but also there are other tissues such as lung and bone. By measuring using a non-homogeneous phantom or replica phantom with different materials densities, we compared the dose accuracy results from planning by this two phantom types. Replica phantom uses materials such as pine wood instead of lungs, polypropylene as a substitute for fat, acrylic instead of cartilage and solid silicon can change the bone. The study was conducted by varying the standard field area i.e., 3x3 cm, 5x5 cm, 10x10 cm, 15x15 cm, 20x20 cm and the mix area field. Obtained accurate results in standard phantom, i.e., 95.2%, 86.7%, 94.3%, 94.8%, 93.1% and 97.3%. Then on replica phantom accuracy is 94.7%, 95.6%, 96.2%, 86.0%, 91.6% and 96.6%. Keywords: Treatment planning system (TPS), Dose, Standard phantom, Non-homogeneous phantom, Replica phantom, Non-homogeneous tissue
ANALISIS DOSIS SERAP RELATIF BERKAS ELEKTRON DENGAN VARIASI KETEBALAN BLOK CERROBEND PADA PESAWAT LINEAR ACCELERATOR Lamtiyah Ikha Indriyana; Eko Hidayanto; Zaenal Arifin
Youngster Physics Journal Vol 3, No 3 (2014): Youngster Physics Journal Juli 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

During radiotherapy treatment, critical organs are shielded using cerrobend blocks. The objective of this study was to define the minimal thickness of cerrobend blocks so that the relative absorbed dose in target less than 5%. All measurements were performed using linac Siemens/Primus Mclass 5633. Phantom relative absorbed dose were measured for square field 10 x 10 cm2. The thickness of cerrobend blocks were 2, 4, 6, 8 and 10 mm. The measurements in water were performed using compact chamber fitted with acrylic build up caps.The minimal thickness of cerrobend blocks for 5, 10 and 14 MeV electron beams are 2, 4 and 6 mm, respectively. The relative absorbed dose for phantom’s surface, maximum depth and x-ray tail using those blocks are 0.12%, 0.16%, 0.21%, 2.18%, 1.56%, 1.16%, 2.92%, 2.47% dan 1.70%.The relative absorbed dose decreases with the increasing of cerrobend block  thickness and phantom depth. Therefore, if cerrobend blocks are used to protect critical organs, the thickness should be taken into account accurately.Keywords: cerrobend blocks, relative absorbed dose, electron beams
ANALISA TINGKAT KONTAMINASI DOSIS NUKLIR DAN LAJU PAPARAN RADIASI PADA INSTALASI KEDOKTERAN NUKLIR Rafli Filano; Eko Hidayanto; 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

The research has been analyzed the level of nuclear contamination and radiation exposure rate at installation of nuclear medicine with efforts a radiation protection is the prevention or decrease the number of entry of radioactive material into the human body. The method used to conduct measurement a count of contamination of surface work area resulting from the use of radioactive substances and carried out at a distance of 0.5 cm between the detector window with contaminated areas, while measuring the radiation exposure rate in each of center room at height of 1 meter from the surface of the floor in various rooms installation of nuclear medicine. The results of measurement obtained levels of contamination nuclear dose in various rooms installation of nuclear medicine is from 0,16 to 243 Bq/cm2 were classified as low to high levels of contamination. While the results of measurements of the radiation exposure rate is from 0,026 to 1,693μSv/h, which is classified as below the allowable dose value level, so it is still safe for radiation workers and other patients. Keywords: Radiation Protection, Radioactive, Contamination, Radiation Exposure Rate, Nuclear Medicine
PENENTUAN INDEKS BIAS DARI KONSENTRASI SUKROSA (C12H22O11) PADA BEBERAPA SARI BUAH MENGGUNAKAN PORTABLE BRIXMETER Tiffany Rahma Novestiana; Eko Hidayanto
Youngster Physics Journal Vol 4, No 2 (2015): Youngster Physics Journal April 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

One of the determination of the quality of the juice is concentration. Concentration can determine the value of the refractive index with a refractive index with a Abbe Refractometer. This experiment was determined the value of the refractive index of branded fruit juices using Portable Brixmeter was to get correlation between refractive index and concentration and correlation between concentration and length of measurement, and quality of fruit juice using Portable Brixmeter. The research was conducted by dilution and observation of length time measurement of fruit juice concentration. Data were analized by approach linier charts for dilution, while the length of time measurement of juice concentration with quadratic approach of polynomial. The amount of sucrose liquid concentration is comparable with its refractive index. Correlation between liquid concentration of C sucrose with refractive index n in pure sucrose (ns):0,0018C+ 1,3270 for fruit juice of guava, orange, apple, and soursop respectively (nja):0,0013C+1,3336; (nje):0,0014C+1,3334; (na):0,0015C+1,3329 and (nsi):0,0014C+1,3331. According to the length measurement of the concentration, the longer of time measurement decreased the concentration value. Concentration equation contained fruit juice taste guava, orange, apple, and soursop respectively: (Cja):-0.0016t2+0.0199t+13.365; (Cje):- 0.0062t2+0.0916t+11.444; (Ca):-0.0024t2-0.0016t+12.472 and  (Csi):-0.0032t2+0.0015t+12.158. Keywords: refractive index, sucrose concentration, portable brixmeter, fruit juice.
Produksi gas hydrogen menggunakan metode elektrolisis dari elektrolit air dan air laut dengan penambahan katalis NaOH Yoyon Wahyono; Heri Sutanto; Eko Hidayanto
Youngster Physics Journal Vol 6, No 4 (2017): Youngster Physics Journal Oktober 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

This study deals with the production of hydrogen gas (H2) using electrolysis method. H2 gas is a source of Renewable Energy (EBT).This research was conducted to determine the amount of concentration (ppm) and purity (% vol) of H2 gasses produced by electrolysis method. The purify and concentration of H2 gasses was determined using gas analyzer and MQ sensor 8 respectively. The results showed that the production of H2 gas with the highest concentration was obtained in aqueous electrolysis DM + NaCl + NaOH with a 12 volt voltage 4500 ppm. Production of H2 gas in aqua DM electrolysis, aqua DM + NaCl, and aqua DM + NaOH no detectable pollutant gas such as CO, CO2, HC, NO.Keywords: Electrolysis, Energy, Hydrogen gas, Catalyst.
PENGARUH PERUBAHAN FAKTOR EKSPOSI TERHADAP NILAI CT NUMBER Tina Melinda; Eko Hidayanto; Zaenal Arifin
Youngster Physics Journal Vol 3, No 3 (2014): Youngster Physics Journal Juli 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

CT Number valuehad been conducted with various of exposurefactoronCT. Testingwas conducted to test the CTNumber value changeswith varioues of exposure factorsthencompare it withthe recommendedtolerance. Testing was doneby usingsome objectthere arewater phantom, plasticwaterphantom, chickenblood, chicken (breast part) andchickenbone(thigh). Performedwithtwoscanning, axialandhelicalscanning methods. Various of exposurefactors used the voltage 80 kVp to 140kVp, current100 mA  to 180mAandexposure time0.6 second to 2second. Collimatorwith alargeselection and slice thickness 5mm.            From the test resultshave known thatchangesof the exposurefactorswill affectedCTNumber value. CT Number value obtain from the test results by using water phantom -2,50 HU until -4,99 HU, plastic water phantom -6,99 HU until +6,99 HU, blood +31,01 HU until +36,70 HU, chiken (soft tissue) +48,33 HU until +66,61 HU and bone +800,15 HU until +1188,28 HU.Thevalue is stillwell withinthe recommendedtolerancesareforwater phantom andplasticwaterphantom0±7HU, blood+30 HU to+45HU, soft tissue+37 HUto+300 HU andbone+700HUto+3000 HU.Keywords: CTNumber, exposure factors, plasticwaterphantom, axial scanning andhelicalscanning
ANALISA KURVA PERCENTAGE DEPTH DOSE (PDD) DAN PROFILE DOSE UNTUK LAPANGAN RADIASI SIMETRI DAN ASIMETRI PADA LINEAR ACCELERATOR (LINAC) 6 DAN 10 MV Mariatul Khiftiyah; Eko Hidayanto; 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

External radiotheraphy uses either symmetry or asymmetry radiation field. Percentage Depth Dose (PPD) and Dose Profile on either symmetry or asymmetry radiation field is an important parameter in conducting external therapy that is to analyze the result of parameters used for measurement, whether it is adjusted according to the specified tolerance limit. If the field size 10 X 10 cm2 is still in specified tolerance limit or it has been exceeding the limit.The techique used to collect the data was comparing whether dose distribution taken on the surface of either symmetry or asymmetry radiation field with maximum depth gained from Percentage Depth Dose (PPD) measurement and in the depth of 2 cm. By using device Linear Accelerator (LINAC) energy foton 6 and 10 MV in the radiation field with condition field no off-set and off-set 1 cm, off-set 3 cm and off-set 5 cm with Source Surface Distance (SSD) value 100 cm and in radiation field 10 X 10 cm2.The measurement result showed a change depth on Percentage Depth Dose (PPD) value in the off-set of radiation field 5 cm, on both kinds of energy caused by beam hardening, with value of symmetry and flatness 1.43% and 9.28%, for energy 6 MV and 2.2%, 6.59% for energy 10 MV. There was a change in file profile that caused declining value of flatness, and symmetry. Dose distribution because of this asymmetry radiation field should be concerned in clinical for application of asymmetry radiation field usage. Keywords: Percentage Depth Dose (PDD), Profile Dose, Symmetry, Asymmetry, flatness.
ANALISIS DISTRIBUSI COMPUTED TOMOGRAPHY DOSE INDEX (CTDI) PADA BODY PHANTOM Nur Paramita Nira Mulyono; Eko Hidayanto; Zaenal Arifin; Choirul Anam
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

Measurement of Computed Tomography Dose Index (CTDI) Distribution in Body Phantom has been done in Dr. Karyadi’s Hospital. The purpose of this research were to find out value of CTDI in the five holes in body phantom and to determine relation between slice thickness and CTDI. This research used CT Dose Profiler in helical CT and CT Dose Profile Analyzer Software. This measurement applied protocol of abdomen with tube voltage 120 kV, time rotation 200 mAs, pitch 1, scan length 160 mm, and scan time 5, 07 second. Measurement was applied variation of detector position in the five holes (center, top perifer, right perifer, bottom perifer, and left perifer) and slice thickness   1 mm, 2 mm, and  3 mm. Average CTDI value in five holes of body phantom has range about 11,97 mGy until         13,17 mGy. There are slight differences among all of five holes. It show that dose ditribution in the center and perofer of body phantom tend to be homogeneous. The fluctuation of CTDI values for 1 mm, 2 mm, and 3 mm slice thickness has nocertain pattern or trend. CTDI values have slight differences among the thickness. The measurement show that   1 mm, 2 mm, and 3 mm slice thickness has 0,5 mGy difference to CTDI value. Keyword: CTDI, five holes, body phantom, slice thickness
Co-Authors Abdul Rofiq Achmad Chalid Afif Afrio Rika. R Agus Joko Prasetyo Agus Romadhon Agus Subagio Ahmad Pradana Alfia Hanim Ali Khumaeni Ana Aprilia Annisa Tenri Maya Anugrah Rahma Ari Wiganti Ardian Handoko Ari Bawono P Ari Bawono Putranto Ariij Naufal Arisa Dwi Sakti Astri Suppa Supratman Bambang Haris Suhartono, Bambang Haris Budi Muhammad AR Candra Ancila Choirul Anam AM Diponegoro Dewi A. Insiano Diah Dwiana Lestari Duandini, Ega Elin Nuraini Elvira Rizqi Widyanti Erna Mariani Etika, Eva Anggun Evi Setiawati Galih Puspa Saraswati Galih Puspa Saraswati Gani Gunawan Gede Wiratma Jaya H Hadiyanto Hella Arofah Heri Sugito Heri Sutanto Hidayatullah Hidayatullah I. Istadi Idam Arif Iis Nurhasanah Indras Marhaendrajaya Iva Nistiyanti Jhonwesly Manik Josepa ND Simanjuntak Jun Kawai K Sofjan Firdausi Lamtiyah Ikha Indriyana M Rizqi Aditya Rahman Mariatul Khiftiyah Miftahul Aziz Mohammad Haekal Mohd Hanafi Ali Muahamad Irsal Much. Azam Muchammad Azam, Muchammad Muhammad Irwanto Muhammad Nur Muharam Budi Laksono, Muharam Budi Nur Paramita Nira Mulyono Nurul Hikmantiyah Nurulita, Syaphira Faza Pandji Triadyaksa Poppy Intan Tjahaja Poppy Intan Tjahaja Puput Khusnaiatul Putri Parmitasari Putu Sukmabuana Rafli Filano Rahmawati Hidayah Rini Shintawati Salimatul Litasova Sanggam Ramantisan Sanggam Ramantisan Sanggam Ramantisan Santi Yuli Astuti Singgih Wibowo Sri Murni Susila Wardaya, Susila Takashi Yamamoto Teruo Tanabe Tiffany Rahma Novestiana Tina Melinda Tri Windarti Tunggul Drajat Mulatomo Ukhti Lailun Nisa Very Richardina Wahyu Setia Budi Wahyu Tri Cahyanto Yoyon Wahyono Yoyon Wahyono Zaenal Arifin