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All Journal JFA (Jurnal Fisika dan Aplikasinya) Jurnal Pengabdian Pada Masyarakat Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Ilmiah Ilmu Terapan Universitas Jambi
Mohtar Yunianto
Universitas Sebelas Maret
Religion Agriculture, Biological Sciences & Forestry Arts Decision Sciences, Operations Research & Management Education Engineering Industrial & Manufacturing Engineering Physics Social Sciences Other

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Analisis Citra Simulator Unit Radiologi RSUD dr. Moewardi Surakarta Zening Damaringtyas; Mohtar Yunianto; Harjana Harjana
Jurnal Fisika dan Aplikasinya Vol 10, No 2 (2014)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (395.249 KB) | DOI: 10.12962/j24604682.v10i2.810

Abstract

Telah dilaksanakan penelitian tentang analisis citra simulator unit radiologi RSUD dr. Moewardi Surakarta. Citra yang dihasilkan simulator sebagai verifikasi lapangan dalam radioterapi. Citra tersebut akan ditajamkan sehingga batasan luas lapangan semakin jelas. Citra diolah dengan metode deteksi tepi yang telah diprogram melalui perangkat lunak Matlab. Tampilan program berupa GUI (Graphic User Interface) sehingga mudahdigunakan. Selain metode deteksi tepi, program juga melakukan perhitungan aksis lapangan penyinaran. Perhitungan aksis lapangan penyinaran berdasarkan informasi yang diperoleh pada citra meliputi faktor magnifikasi dan axis penyinaran. Hasil dari penelitian ini adalah suatu program yang dapat mendeteksi tepi citra secara tepat dan sesuai gambar asli dan dapat menghitung besarnya aksis lapangan penyinaran secara teliti.
Inisiasi Kemampuan Berwirausaha melalui Pengenalan E-Commerce bagi Anak Panti Asuhan Yatim Muhammadiyah Cabang Blimbing Sukoharjo Mohtar Yunianto; Budi Purnama; Kusumandari Kusumandari; Utari Utari
Jurnal Pengabdian Pada Masyarakat Vol 4 No 3 (2019)
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (619.35 KB) | DOI: 10.30653/002.201943.155

Abstract

INITIATING ENTREPRENEURIAL SKILLS THROUGH THE INTRODUCTION OF E-COMMERCE FOR ORPHANS OF THE MUHAMMADIYAH ORPHANAGE IN BLIMBING SUKOHARJO. Efforts to improve skills and the cultivation of entrepreneurial spirit have been carried out at the Orphanage PKU Muhammadiyah Cabang Blimbing. This institution is home to 20 orphans located in Wonorejo, Polokarto, Sukoharjo. Wonorejo village is a convection village where most of the population work as convection producers, which in the sale of their clothes still use conventional methods, which are sold in stores and in markets. The pattern of mutually beneficial cooperation between convection entrepreneurs and orphans is initiated by technopreneurship activities namely by selling convection through online stores.
Early introduction of science and technology through optimizing the use of Science Props media for MI Muhammadiyah Wonorejo students Mohtar Yunianto; Suparmi Suparmi; Cari Cari; Fuad Anwar; Suharyana Suharyana; Darmanto Darmanto
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 6 No. 1 (2023): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v6i1.2725

Abstract

Learning science and technology to children so far by telling stories so that children are easily bored, and as a result, children lack understanding of science and technology learning. Efforts in introducing science and technology to early childhood have been made to minimize this incident. The activity is in the form of training in using electrical and magnetic props for MI Muhammadiyah Wonorejo students. The activity begins with a pretest to determine students' initial ability, followed by introducing the concept of theory and practice of props in groups, electrical material related to series and parallel circuits for magnetism related to static magnets and dynamic magnets. The result is that there is more interest from students to learn, and there is an increase in student understanding of magnetic electricity material and can use of teaching aids.
STUDY OF 3D PRINTING HIPS BREAST PHANTOM MATERIAL: EFFECT OF EXPOSURE VOLTAGE VARIATION AND NODULE SIZE Mohtar Yunianto; Nanda Astika Devi; Fuad Anwar; Adnan Cindyana
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 3 (2025): Volume 9, Nomor 3, September 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i3.42846

Abstract

A study has examined the characteristics of 3D printer materials of HIPS and PLA. The study began by printing HIPS materials that resembled breast organs and PLA materials that resembled breast cancer nodules. Then it exposed them using a CT scan with voltage variations of 80 kV, 100 kV, and 120 kV. The parameters studied were compared with the reference breast organ. The results obtained at these voltages obtained CT-number values sequentially (-85.14+0.25) ; (-64.79+0.21) HU; (-55.08+0.18) HU values from the reference 35 to -94 HU, relative electron density values sequentially 0.915; 0.935; 0.945 with a reference value of 0.950, the density value of the material obtained is (0.921+0.002) g/, The EDG value is 3.24 x  from ICRU 1989 was 3.33 x, The EDV value is (3.00 + 0.01) x  from ICRU report 44 was 3.18 x 10, the value is 3.50 the value of ICRU data is 3.28, and the effective dose values are respectively 2.53 mSv, 2.83 mSv, 3.20 mSv. Based on these characteristics, the results indicate that the breast phantom matches the characteristics of the breast organ, allowing it to be used to predict the presence of breast cancer, as it shares the same characteristics. The results of exposure to the lung cancer nodule phantom on the CT-Scan image of the 2 mm nodule size are not visible. The results of this study can be used as a consideration for radiologists when choosing a voltage based on the predicted size of the breast cancer nodule.
Co-Authors Adnan Cindyana Anwar, Fuad Budi Purnama Cari Cari Darmanto Darmanto Harjana Harjana Kusumandari, Kusumandari Nanda Astika Devi Suharyana Suharyana Suparmi Suparmi Utari Utari Zening Damaringtyas