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All Journal Journal of Aceh Physics Society Journal of Physics: Theories and Applications INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Ilmu Fisika Jurnal Teori dan Aplikasi Fisika Relativitas : Jurnal Riset Inovasi Pembelajaran Fisika Journal of Applied Agricultural Science and Technology Jurnal Natural Teknologi dan Industri Pertanian Indonesia PESARE: Science and Engineering Service Journal
Evi Yufita
Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala Jl. Syekh Abdul Rauf, Darussalam, Banda Aceh 23111, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Neuroscience Physics Public Health Social Sciences

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QUALITY CONTROL X RAYS MAMMOGRAPHY IN THE EFFORT MITIGATION INCREASING NUMBER OF CANCER PATIENTS Rini Safitri; Evi Yufita
Jurnal Natural Volume 17, Number 1, March 2017
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v17i1.6970

Abstract

Abstract. Early detection of breast cancer is the first step in prevention that can be done by women, therefore when one is diagnosed with breast cancer, the appropriate treatment can be performed quickly and accurately. Early diagnosis of breast cancer can be a way of mitigation in preventing breast cancer through the use of mammography. Bureau of Radiology as said by The Joint Commission on Accreditation of Hospitals (JHCA) stated that one of the responsibilities of the radiology unit is to control the quality of service which aims to minimize the radiographic image repetition factor; as well as maximizes the quality of radiographic image. Quality control tests are an effort that is needed on the mammography X-ray diagnostics tools. This is done to maintain the quality of expected output. The parameters that are included within the radiation output are the magnitude of current and the voltage of tube that are produced; therefore they remained constant and correspond to the recommended standard. Bureau of Radiological Health, as said by JHCA mentioned that to control the quality of image which will minimize the radiographic image repetition and maximizes the quality of radiographic image. Therefore the radiation output will not be dangerous later. The early stage of the quality control test on the machine was conducted by setting all the filtrations which were placed to capture the x-ray on the x-ray plane tube with minimum value. Then, ionization chamber is placed on the test subject points; right after that the distance between it to the radiation source is noted. The x-ray film is place on a film on the compression table of the patient and the distance between film and the focus point is noted. This is then exposed using a target filter Mo/Mo by setting the current as well as variation the voltage and time. The standard voltage measurements are 20-33kVp. This data is from the observations of time exposure; the output value is then noted. The above procedure is conducted from the minimum voltage to the maximum voltage. The output ray is measured for each voltage. The same procedure is conducted to the target filter Mo/RH. The results obtained are that the greater the input voltage and current will subsequently produce greater doses, therefore the exposure has exceeded the standard limit 0.1 mHy with longer exposure time. The HVL density thickness on the mammography X-ray machine determined the quality of the beam and the doses of x-ray exposure on the mammography machine. The output stability of x-ray beam exposure in the mammography machine mode Mo/Mo still fulfill the standard which is the value of 69% Keywords: Quality Control, Sinar-X, mammography, Mp/Mo, Mo/RH
ANALISA PENGARUH FUNGSI JARAK PESAWAT SINAR-X TERHADAP SEBARAN DOSISI RADIASI DI RUANG LABORATORIUM KLINIK Yufita, Evi; Fitriani, Fitriani; Fasbir, Fasbir; Safitri, Rini
Relativitas: Jurnal Riset Inovasi Pembelajaran Fisika Vol. 7 No. 2 (2024): Jurnal Riset Inovasi Pembelajaran Fisika
Publisher : Department of Physics Education, Faculty of Teacher Training and Education, UNIVERSITAS MA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/relativitas.v7i2.18234

Abstract

Sebaran dosis paparan radiasi di ruang radiologi sangat penting diukur, sehingga dapat dipastikan keamanan para pekerja radiasi. Penelitian ini bertujuan untuk mengetahui pengaruh jarak sumber radiasi terhadap sebaran dosis radiasi dan efektivitas perisai radiasi di laboratorium klinik Fakultas Hewan Universitas Syiah Kuala. Metode yang digunakan adalah pengukuran radiasi sekunder pada jarak 1m, 1,5m dan 2m dari sumber radiasi dengan alat multimeter X-Ray. Efektivitas perisai radiasi diukur pada bagian dalam dan luar perisai (kaca operator, pintu dan dinding). Hasil penelitian pengukuran dosis radiasi menunjukkan bahwa daerah aman bagi pekerja radiasi dari sumber radiasi sinar-X pada I = 100 mA dan I =200 mA adalah untuk V = 46 kV diperoleh pada jarak lebih 1 m, pada V = 55 kV pada jarak lebih 1,5 m dan pada V = 81 kV pada jarak 2 meter. Efektivitas perisai radiasi (kaca operator, pintu dan dinding) di laboratorium klinik FKH sangat baik (100 %).
Physical and Chemical Properties of Gayo Coffee Brewed by Boiling Method with Variation of Particle Coffee Ground Yufita, Evi; Muhammad Shadiq Maula, Teuku; Gunawati, Gunawati; Lloyd Woodfield, Peter; Yusibani, Elin
Jurnal Ilmu Fisika Vol 17 No 1 (2025): March 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.1.9-18.2025

Abstract

The effect of coffee ground particle size by the boiling method on the values of physical and chemical parameters is studied. The coffee used is Arabica (Luwak, wine, honey) and Robusta from the Gayo Highlands, Aceh Province, Indonesia. Extraction of the coffee brew uses the boiling method with different particle sizes of coffee grounds (fine and coarse). The caffeine content in the coffee brew is identified using the FieldSpec4 Hi-Res Spectrometer. The particle size of coffee grounds affected the coffee brew's physical properties and caffeine content. The physical properties in the form of the pH value of Arabica coffee brew are lower than Robusta in a range from 4.87 to 4.97 and 5.13 to 5.28, respectively. The pH of coffee brew with fine particle sizes is slightly higher than for coarse ones for Robusta coffee brew. The density of the brew is in the vicinity range of 0.99 g/cm3. Arabica and Robusta brews differ in viscosity and caffeine release, influenced by coffee particle size. Coarse particles yield more caffeine in Arabica, while fine particles release more in Robusta, demonstrating the impact of grind size on caffeine extraction in coffee.
Physical and Chemical Properties of Gayo Coffee Brewed by Boiling Method with Variation of Particle Coffee Ground Yufita, Evi; Muhammad Shadiq Maula, Teuku; Gunawati, Gunawati; Lloyd Woodfield, Peter; Yusibani, Elin
Jurnal Ilmu Fisika Vol 17 No 1 (2025): March 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.1.9-18.2025

Abstract

The effect of coffee ground particle size by the boiling method on the values of physical and chemical parameters is studied. The coffee used is Arabica (Luwak, wine, honey) and Robusta from the Gayo Highlands, Aceh Province, Indonesia. Extraction of the coffee brew uses the boiling method with different particle sizes of coffee grounds (fine and coarse). The caffeine content in the coffee brew is identified using the FieldSpec4 Hi-Res Spectrometer. The particle size of coffee grounds affected the coffee brew's physical properties and caffeine content. The physical properties in the form of the pH value of Arabica coffee brew are lower than Robusta in a range from 4.87 to 4.97 and 5.13 to 5.28, respectively. The pH of coffee brew with fine particle sizes is slightly higher than for coarse ones for Robusta coffee brew. The density of the brew is in the vicinity range of 0.99 g/cm3. Arabica and Robusta brews differ in viscosity and caffeine release, influenced by coffee particle size. Coarse particles yield more caffeine in Arabica, while fine particles release more in Robusta, demonstrating the impact of grind size on caffeine extraction in coffee.
Optimalisasi Pemberdayaan Laboratorium IPA dalam Upaya Meningkatkan Pemahaman Konsep-konsep Fisika bagi Guru IPA dan Siswa di Madrasah Aliyah Rajibussalim, Rajibussalim; Yufita, Evi; Zulfalina, Zulfalina; Abdullah, Faisal; Maimun, Teuku
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 1, No 1 (2023): Oktober 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pesare.v1i1.33978

Abstract

A Science Laboratory at Senior High School is an important facility for students in learning Sciences, Technology, Engineering and Mathematics (STEM). Students learn concepts in the classroom and should be able to test and/or prove those concepts in experiments in Science Lab. However, many Science laboratories at schools were not fully operated due to the lack of skillful teachers or lab assistants who can manage Science laboratories with the highest standard and be able to conduct experiments with available KITs in those laboratries. Based on this phenomenon, a group of lecturers from Physics Department of Syiah Kuala University conducted a community service at school in order to share insights and skills related to a good practice in Laboratory management and demonstated how to run Physics experiments with available KITs at a designated school laboratory. The participants of this event were Science teachers and students at the school. Some of the outcomes of this community service are the increase in Laboratory management skills among science teachers at this school and increase in ability to utilise available Science KITs at that school for Physics experiments. The teachers and students were very happy and antusias to participate in this program and be benefited from this activity
Co-Authors Aztarina Ermy Vijaya Beti Nanda Sari Cut Dewi Afriani Desy Fitriana Edwar Iswardy Elin Yusibani Endi Suhendi Faisal Abdullah Fasbir, Fasbir Fatriah Fatriah Fauzi . Fitriani Fitriani GUNAWATI, GUNAWATI Ikramullah ikramullah Lloyd Woodfield, Peter Muhammad Ilham Noor Muhammad Ilham Nur Muhammad Isa Muhammad Shadiq Maula, Teuku Munzir Munzir Mursal, M Nurmalita . Nurmalita Nurmalita Nurmalita Nurmalita Nurrizka Nadia Nursabila Al Hazmi Nurul Fitri Nurul Fitri Rajibussalim Rajibussalim Rini Safitri Rini Safitri Saudiah Mawaddah Teuku Maimun Zulfalina . ZULFALINA ZULFALINA Zulfalina, Zulfalina Zulkarnain Jalil Zulkarnain Jalil Zuraini .