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All Journal Jurnal Edukasi dan Penelitian Informatika (JEPIN) INDONESIAN JOURNAL OF APPLIED PHYSICS Adi Widya : Jurnal Pengabdian Masyarakat SEMAR Jurnal Ilmiah Ilmu Terapan Universitas Jambi Aceh International Journal of Science and Technology Science, Technology, and Communication Journal
Mohtar Yunianto, Mohtar
Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

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PELATIHAN PEMANFAATAN ALAT PERAGA BAGI GURU SD MUHAMMADIYAH DI SUKOHARJO DALAM MENGHADAPI ERA REVOLUSI INDUSTRI 4.0 Anwar, Fuad; Kusumandari, Kusumandari; Iriani, Yofentina; Yunianto, Mohtar
ADI WIDYA : JURNAL PENGABDIAN MASYARAKAT Vol 4, No 1 (2020): ADIWIDYA
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (485.6 KB) | DOI: 10.33061/awpm.v4i1.3135

Abstract

Community service activities for Muhammadiyah Elementary School Teachers in Polokarto Subdistrict, Sukoharjo Regency have been carried out. The background of this activity is the information obtained that the teachers in the school still use books and blackboards especially for subjects related to Science so that students become less creative and innovative thinking. activities carried out in the form of ongoing activities, namely training in the use of props style, motion and energy as many as 10 kits, presentation of the results of the practice of using props and the process of dissemination to students. The results obtained that all participants in understanding the teaching aids that have been trained, seen from the activeness of the participants, the ability of participants in the presentation and the results of dissemination to students in their respective schools
Sistem Deteksi Kelainan Neuromuscular Menggunakan Adaptive Neuro Fuzzy Inference System dan Dekomposisi Wavelet Elektromyogram Nuryani, Nuryani; Sofia, Iftita Ida; Yunianto, Mohtar
JEPIN (Jurnal Edukasi dan Penelitian Informatika) Vol 7, No 3 (2021): Volume 7 No 3
Publisher : Program Studi Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jp.v7i3.49966

Abstract

Sistem neuromuscular terdiri dari saraf motorik dan otot rangka yang menghasilkan aktivitas kelistrikan pada otot dan menyebabkan otot dapat berkontraksi dan menghasilkan gerak tubuh. Gangguan neuromuscular dapat terjadi pada sel saraf yang dinamakan Neuropathy dan pada sel otot yang dinamakan Myopathy. Aktivitas kelistrikan pada otot direkam melalui suatu alat yang dinamakan Electromiography (EMG). Pada penelitian ini dilakukan identifikasi sinyal EMG pasien sehat, myopathy dan neuropathy. Neuropathy merupakan gangguan yang disebabkan oleh kerusakan sel saraf. Myopathy merupakan gangguan yang disebabkan oleh kerusakan sel otot. Penanganan dan pengobatan myopathy dan neuropathy berbeda, sehingga diperlukan suatu metode yang dapat mendiagnosis dengan tepat jenis gangguan yang dialami. Analisis karakteristik sinyal EMG dilakukan menggunakan metode dekomposisi Wavelet Discrete Dyadic dan variasi fitur Root Mean Square (RMS), approximate entropy, spectral entropy dan Singular Value Decompotition (SVD) entropy. Sinyal karakteristik yang diperoleh di identifikasi menggunakan metode klasifikasi Adaptive Neuro Fuzzy Inference System (ANFIS). Performa ANFIS dalam mengidentifikasi karakteristik sinyal EMG pada masing-masing koefisien dekomposisi, menghasilkan performa terbaik pada koefisien aproksimasi ke-5 (cA5), dengan akurasi 100%, sensitivitas 100% dan spesivitas 100%.
Fluid continuity equation simulation: Monitoring fluid reservoir volume in the heart over time Maftukhaturrizqoh, Olivia; Wijaya, Agung Dwi; Sofia, Iftita Ida; Yunianto, Mohtar
Science, Technology and Communication Journal Vol. 4 No. 2 (2024): SINTECHCOM Journal (February 2024)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v4i2.259

Abstract

Fluid flowing in a cross-section of a channel follows the law of continuity, namely the mass rate of fluid entering will be the same as the mass rate of fluid leaving. One of the applications of fluid flow is in human blood flow. Blood flow is controlled by the heart which functions to pump blood to and from the heart. The flow of blood entering and leaving the heart is determined by the cross-sectional area of the channel and the speed of blood flow through the heart. The speed of blood flow in the heart consists of two speeds, namely the systolic speed when blood leaves the heart and the diastolic speed when blood enters the heart. So that the volume in the heart can be observed changes over time. By creating a simulation using the MATLAB programming language, the difference between normal heart volume and problematic heart volume can be known. A program called reservoir and cardiac based on graphical user interface was created to determine the volume of fluid in the reservoir at any time and compare the volume of fluid in normal and abnormal hearts concerning time in 1 systole-diastole cycle.
Analysis of The Effect of Changes in Thickness and Infill Density of Thermoplastic Polyurethane and Polyethylene Terephthalate Glycol Materials as a Radiological Phantom Yunianto, Mohtar; Cari, Cari; Sari, Arum Putri Kurnia
Aceh International Journal of Science and Technology Vol 13, No 2 (2024): August 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.2.40201

Abstract

Phantoms are used to research image quality and the amount of attenuation as an organ simulation. If done in the human body, it would be hazardous. High radiation exposure can damage cells. Therefore, the phantom is made to resemble the properties and characteristics of a tissue so that the absorbed dose value can be analyzed according to the tissue in the organ. One use of 3D printing technology is in making phantoms. Radiology phantoms must have the same characteristics as human body tissue. This research varies the thickness and infill density of the phantom to get the suitable phantom based on material density, CT number, electron density, and effective dose. The materials used are Thermoplastic Polyurethane (TPU) and Polyethylene Terephthalate Glycol (PETG) with thickness variations of 1 cm, 2 cm, 3 cm, 4 cm, and 5 cm, and infill density variations of 20%, 40%, 60%, 80% and 100 %. Based on the test parameters carried out, it was found that changes in thickness did not affect the material density, EDG, EDV, and Z eff of the sample. However, changes in thickness are proportional to the CT number and electron density values. Meanwhile, changes in infill density are proportional to changes in material density values, CT number, electron density, and EDV. However, changes in infill density do not affect the EDG and Z eff values. The values obtained for each parameter are compared with the reference organ. Samples made from TPU and PETG are suitable for lung, muscle, soft tissue, and spongy bone.
STUDY OF 3D PRINTING HIPS BREAST PHANTOM MATERIAL: EFFECT OF EXPOSURE VOLTAGE VARIATION AND NODULE SIZE Yunianto, Mohtar; Devi, Nanda Astika; Anwar, Fuad; Cindyana, Adnan
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.
Back Matter Vol 07 No 01 2017 Yunianto, Mohtar
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 7, No 1 (2017): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v7i1.19970

Abstract

Desain Sensor Serat Optik Sederhana untuk Mengukur Konsentrasi Larutan Gula dan Garam Berbasis Pemantulan dengan Menggunakan Konfigurasi Jarak Cermin-Fiber Optik Tetap M, Arrini Nurul; Marzuki, Ahmad; Yunianto, Mohtar
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 02 (2013): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i02.1254

Abstract

A simple method to measure a solution refractive index using fixed mirror refractive optical fiber sensor has been investigated. The solution used are sugar and salt solution, with concentration varies from 1M to 5M. The diameter of polymer optical fiber used is 0.5 mm and light source used is LED (λ=676 nm). The sensor work based on light intensity modulation, sub jected to mechanical structure change of the fiber due to an applied force. The result showed that the concentration of sugar and salt linearly are related with their refractive indeces (R2=0,95006) and (R2=0,99858).
Front Matter Vol 06 No 01 2016 Yunianto, Mohtar
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 6, No 01 (2016): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v6i01.19960

Abstract

Analisa Sea Level Rise Dari Data Satelit Altimetri Topex/Poseidon, Jason-1 Dan Jason-2 Di Perairan Laut Pulau Jawa Periode 2000 – 2010 Wuriatmo, Hastho; Koesuma, Sorja; Yunianto, Mohtar
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 2, No 02 (2012): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v2i02.1296

Abstract

It has been conducted a research about sea level rise (SLR) in surrounding Jawa island by using satellite altimetry data Topex/Poseidon, Jason-1 dan Jason-2 for period 2000 – 2010. Satellite altimetry is satellite which specially design for measuring dynamics of sea water. Those satellite lauched firstly in 1992 incorporation between National Aeronautics and Space Administration (NASA) dan European Space Agency (ESA). There are six locations for measuring SLR i.e. Jakarta, Semarang, Surabaya, Pangandaran, Jogjakarta dan Prigi. We choselocations based on alongtrack of satellite and near the big cities in Jawa island with dimension area around 0.5ox0.5o degrees. We found SLR rate for Jakarta (2.5 ± 0.24 mm/yr), Semarang (2.16 ± 0.20 mm/yr), Surabaya (2.72 ± 0.19 mm/yr), Pangandaran (0.71 ± 0.33 mm/yr), Jogjakarta (0.91 ± 0.38 mm/yr) and Prigi (1.3 ± 0.38 mm/yr). The average SLR rate for North coast is (2.46 ± 0.21 mm/yr) and for South coast (0.97 ± 0.36 mm/yr). This results are wellcorrelated with data from tide gauge stations.
Back Matter Vol 8 No 1 2018 Yunianto, Mohtar
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 8, No 1 (2018): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v8i1.24062

Abstract

Co-Authors Ahmad Marzuki Aji, Yusuf Anggara Aldicia, Ivara Salsabila Putri Amalia, Lukmaniyah Rizky Anwar, Fuad Budi Legowo Budi Purnama Cari, Cari Chai, Rifai Cindyana, Adnan Darmanto Darmanto Devi, Nanda Astika Dewi, Armylia Chandra Fahru Nurosyid Fuad Anwar, Fuad Ghozali, Egyn Furqon Hendri Widiyandari Khairuddin - Koesuma, Sorja Kusumandari, Kusumandari M, Arrini Nurul Maftukhaturrizqoh, Olivia N, Nuryani Nanang Wiyono Nuryani Nuryani Permadi, Hardo Ardiansyah Gilang Praptomo, Mokhamad Sahid Raharjo, Dwi Teguh Risa Suryana Riyatun, Riyatun Sari, Arum Putri Kurnia Soeparmi Soeparmi, Soeparmi Sofia, Iftita Ida Suharno Suharno Suharyana Suharyana Suparmi Suparmi Umi Salamah Utari Utari Wijaya, Agung Dwi Wiji Lestari Wuriatmo, Hastho Yofentina Iriani