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All Journal PROSIDING SEMINAR NASIONAL BERKALA FISIKA Edumatsains Jurnal Dinamika Pendidikan Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Journal of Educational Research and Evaluation Jurnal Pendidikan Fisika dan Teknologi Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal ComunitA Servizio International Journal of Science and Society (IJSOC) Jurnal Pengabdian Masyarakat Nusantara Dharma Pengabdian Perguruan Tinggi (DEPATI) Inovasi Kesehatan Global
Taat Guswantoro, Taat
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Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Journal : Edumatsains

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Penggunaan Pasco Capstone 14.1 untuk Menentukan Koefisien Konveksi Udara dengan Metode Pendinginan Air Taat Guswantoro
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 1 No 2 (2017): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v1i2.241

Abstract

Water cooling occurs since the heat energy of water is transferred to the air. Water is placed in a thin transparant vessel can reduce the effects of heat transfer by radiation and conduction, so the most dominant heat transfer is convection. Newton's law of cooling states that the rate of cooling is directly proportional to the temperature difference between the object and room temperature. By knowing the value of constant cooling, the air convection coefficient can be calculated. This study using three different sizes of cups, each of which is filled with hot water. In each glass inserted temperature sensors that connected to the interface, recording the temperature every 60 seconds using pasco capstone 14.1. The resulting graph was analyzed by exponential regression, in order to find the value of constant cooling, from this value can be calculated the air convection coefficient. The research result shows air convection coefficient value of W/m2OC, that mean if there is an object that has an area of 1 m2 and 1OC higher than room temperature, the thermal energy of the object will be lost of 19.9 J for each second. Keywords: Water cooling, heat transfer, air convection coefficient.
Pengukuran Konsentrasi Ozon yang Dihasilkan Dari Penggunaan Raket Nyamuk Taat Guswantoro
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 2 No 2 (2018): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v2i2.602

Abstract

The generation of ozone can be done by using high voltage so as to produce electronic discharge which will ionize the oxygen gas particles then recombination of these ions will produce ozone. The mosquito racket exploits a very high potential difference between its nets in order to burn the mosquitoes that trapped between the nets. The use of mosquito rackets in the air greatly enables the occurrence of electronic discharges that will produce ozone. In this study the mosquito racket is inserted in the sheath then activated for 60 minutes and ozone concentration is measured using ozonmeter every 5 minutes, the mosquito racket has an output voltage of 2500 volts and 5000 volts. On a 2500 volts mosquito racket the maximum ozone concentration of 1.70 ppm occurs at 35 minutes with an average rate of ozone production of 0.0133 ppm / min. On a 5000 volt mosquito rack a maximum ozone concentration of 11.40 ppm occurs at 35 minutes with an average rate of ozone production of 0.277 ppm / min. Keywords: Ozon, Electronic discharge, Mosquito racket.
Analisis Luaran Radiasi Perangkat Sinar-X dengan Sumber Tabung Vakum Gammatron 2x2A Samuel Gideon; Taat Guswantoro
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 3 No 2 (2019): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v3i2.883

Abstract

An x-ray experiments require sophisticated and advanced apparatus which is very expensive resulting some laboratories in universities have not been able to accommodate these stuffs. In fact, a simple and homemade X-ray apparatus may be designed easily and it is quite cheap even the rill x-ray apparatus that equipped by many vendors. Basically, x-ray is generated from x-ray tube following two mechanisms which are characteristics x-ray and Bremstrahlung x-ray. In this study, we designed a simple x-ray apparatus which may generate Bremstrahlung x-ray. The designed simple x-ray apparatus consists of 2x2A rectifier vacuum tube and 25 kV high voltage power supply. For radiation protection and dosimetry, we conducted the experiment in a lead-shielded bunker and used Unfors Raysafe X2 as well as Digilert 100 surveymeter. We measured background radiation dose of 0,49 μGy/h. From the designed simple x-ray testing experiment, we measured radiation dose of 0,49 μGy/h Keywords : 2x2A rectifier vacuum tube, high voltage power supply, simple x-ray apparatus
Karakterisasi Alginat Sebagai Bahan Setara Dengan Jaringan Lunak Untuk Radioterapi Taat Guswantoro; Astri Suppa Supratman; Imelda Sakti Asih
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 4 No 2 (2020): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v4i2.1378

Abstract

At the time of radiotherapy treatment in addition to cancerous tissue, normal tissue around the cancer will also be exposed to radiation doses, inappropriate radiation doses will cause normal tissue to potentially become new cancers called Organ at Risk (OARs). To minimize OARs by using a device made of soft tissue equivalent material that is placed over the surface of the skin called a bolus. The function of this material ensures an increase in surface dosage, this material is also flexible, easy to form, resistant to temperature changes. One of the materials that is easily formed, not easily deformed, flexible and durable is Alginate, because it is a natural hydrogel extracted from brown seaweed. Alginate that will be used in this research is alginate which is often used by dentists to print dentures. Alginate powder is formed by dough with distilled water, then printed in a mold measuring 11 x 11 cm with a thickness of 5, 7 and 9 mm. The characterization of this alginate gel includes electron density and an increase in surface dose percentage. Electron density is obtained by using CT-Scan to find out CT-Number which is then entered into the equation to obtain electron density, electron density from Alginate is obtained by 0.949 so Alginate can be said to be equivalent to breast tissue and fat tissue. Increasing the percentage of surface dose obtained by using the Linac device, obtained at 10 MeV energy Alginate thickness of 5 mm can increase by 0.50%, thickness of 7 mm can increase 9.97% and 9 mm can increase by 19.64%. At 12 MeV energy, 5 mm Alginate is able to increase 0.36%, 7 mm thickness increases by 6.46% and 9 mm thickness is able to increase by 15.03%. With this result Alginate is a soft tissue equivalent material and is able to increase the percentage of surface doses, so that alginate can be applied as a bolus for radiotherapy. Keywords : Alginate, Electron Density, Percentage of Surface Doses.
Co-Authors Agnes Sadja Andreas Rian Nugroho Andreas Rian Nugroho Angriani Nopemnanu Areli Elona Astri Suppa Supratman Bintang R. Simbolon Darmawan, Nathania Anggi Diaz Jubairy Prabowo Erni Murniarti Erni Murniarti Erni Murniarti Erni Murniarti, Erni Etika Nyaman Giawa Eunike Winda Ayusari Faradiba Faradiba Faradiba Faradiba Giawa, Etika Nyama Imelda Sakti Asih Jei Tipoani Sinaga Joshua Dwi Hartoyo Kase, Alfa Graciani Laia, Setiana Lase, Fan Damai Sejahtera Lumbantobing, Septina Severina Manogari Sianturi Manogari Sianturi Manogari Sianturi Manullang, Nathasya Grisella Muhammad Nur Ngia Masta Nurafni Prapitasari Nya Daniaty Nya Daniaty Malau Philipus Philipus Piter Honirius Naitaunus Samuel Gideon Samuel Gideon Samuel Gideon Seprianus Seprianus Septina Severina Lumbantobing Septina Severina Lumbantobing Septina Severina Lumbantobing Septina Severina Lumbantobing St Fatimah Azzahra St Fatimah Azzahra, St Fatimah Sumiati Sumiati Sumiati Sumiati Theressa Eklesia Saumanuk Tris Kurniawati Laia Vincencius Gunawan, Vincencius Yonas Firdinal Silaban Yufran Meliando Olla Zealfiana, Gracia Zebua, Tesalonika Febriani