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All Journal Indonesian Journal of Electronics and Instrumentation Systems Jurnal Sains Dasar Majalah Kedokteran Gigi Indonesia Biomedika Journal of Physics: Theories and Applications Journal of Mathematics and Mathematics Education (JMME) INDONESIAN JOURNAL OF APPLIED PHYSICS Prosiding SNPF (Seminar Nasional Pendidikan Fisika) WAKTU: Jurnal Teknik UNIPA Jurnal Fisika Indonesia Journal of Multidisciplinary Applied Natural Science Indonesian Journal of Teaching in Science JKKI : Jurnal Kedokteran dan Kesehatan Indonesia Edukasia: Jurnal Pendidikan dan Pembelajaran Makara Journal of Science Magister Scientiae
Mitrayana -
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Computational Thinking in Mathematics Learning: Systematic Literature Review Mitrayana, M.; Nurlaelah, Elah
Indonesian Journal of Teaching in Science Vol 3, No 2 (2023): IJOTIS: September 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijotis.v3i2.60179

Abstract

Computational Thinking (CT) has contributed to changing curricula around the world and is needed by everyone. This study aims to determine the research focus related to Computational thinking in mathematics learning and its novelty. The method used in this study is the method with systematic literature review (SLR). The data taken comes from the Google Scholar and Scopus databases. The moderator variables involved in this study were the year of publication, level of education, research class, research methods, and research instruments. All of the data obtained is presented in a quantitative descriptive manner. The results of the research show that 2022 is the highest peak for publication. This research was dominantly conducted at the junior high school level. And the class that is widely used in research is class XI. The study is dominated by descriptive research methods with a qualitative approach. Instruments that are widely used are tests and interviews.
Application of Photoacoustic Spectroscopy for Glucose Level Measurement: A Literature Review Pratama, Buky Wahyu; Widyaningrum, Rini; Setiawan, Andreas; Mitrayana, Mitrayana
Journal of Multidisciplinary Applied Natural Science Vol. 5 No. 2 (2025): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.260

Abstract

This study addresses the critical need for effective glucose level measurement in managing diabetes mellitus (DM). DM is a serious, economically influential disease that has no cure at present, highlighting the magnitude of prevention, control, and monitoring of blood glucose levels. This study systematically examined 79 articles from Google Scholar and PubMed databases, focusing on non-invasive glucose measurement using the photoacoustic system. After eliminating duplicates, 27 articles were reviewed. Glucose solution was predominantly used as the primary sample. Fixed and tunable lasers, especially near-infrared (NIR) lasers, were highlighted due to their superior penetration and accuracy in glucose measurements. Signal-purification techniques were used to guarantee accurate detection by removing noise. The evaluation involved regression analysis and machine learning integration to determine glucose levels statistically. The choice of sampling sites in volunteers was a critical factor affecting measurement accuracy. The study demonstrated meaningful progress in the development of photoacoustic methods, particularly in monitoring DM.
Augmented Reality Research in Middle Schools: Bibliometric Review Triansyah, Fadli Agus; Mitrayana, Mitrayana; Yanti, Fitri; Rabuandika, Andi; Muhammad, Ilham
EDUKASIA Jurnal Pendidikan dan Pembelajaran Vol. 4 No. 1 (2023): Edukasia: Jurnal Pendidikan dan Pembelajaran
Publisher : LP. Ma'arif Janggan Magetan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62775/edukasia.v4i1.268

Abstract

Augmented Reality is a technology that helps 3D virtual objects to be viewed interactively in the real world. Implementing Augmented Reality into the learning process has a great opportunity to get various benefits. The purpose of this study is to capture research landscapes related to Augmented Reality in high school learning from 2009 to 2023. The method used is bibliometric analysis. The database used in collecting the necessary related information is the Scopus database. Augmented Reality research publications in secondary schools from 2009 to 2023 have experienced an increase in recent years. The highest number of citations was in 2013. The United States and China are the most influential countries in this field. The focus of research related to Augmented Reality in secondary schools is 1) technology, motivation, and environment; 2) games and interests; 3) achievement and development. The keyword Augmented Reality is not directly related to science learning. The game keywords are not directly related to the outcomes keywords. This novelty can be useful for further research examining a theme similar to this research. The new themes related to this field are science learning, mathematics education, concepts, and spatial abilities.
CO2 LASER POWER OPTIMIZATION OF PHOTOACOUSTIC SPECTROMETER AND IT’S APPLICATION TO DETECT AMMONIA GAS (NH 3 ) CONCENTRATION ON ISOTONIC BEVERAGE CONSUMER’S BREATH Bergitta Dwi Annawati; Mitrayana Mitrayana
Magister Scientiae No. 47 (2020)
Publisher : Widya Mandala Surabaya Catholic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/mgs.v1i47.2442

Abstract

Performance of photoacoustic spectrometer CO2 laser can be optimized by variation of laser voltage with active laser medium gas compositions include gases He, N2 and CO2. Characterization of photoacoustic spectrometer CO2 laser is done by determined resonance curve, quality factor, noise and lowest detection limit. Photoacoustic spectrometer applied to detect ammonia gas concentration in isotonic beverage. Photoacoustic spectrometer was applied to detect the concentration of ammonia in the isotonic drinks and measuring result using multicomponent-analysis. The lowest detection limit for ammonia gas on line 10R14 obtained at (70 ± 7) ppb with highest laser power obtained at (37 ± 0.1) W and the composition of the active medium gas He, N2 and CO2 30:40:30. The highest concentration of ammonia gas, 0 minute in range of (2.89 ± 0.05) ppm, 30 minutes in range of (4.22 ± 0.05), 60 minutes in range of (5.34 ± 0.05), 120 minutes in range of (5.49 ± 0.05) ppm, 150 minutes in range of (3.62 ± 0.05) ppm and 180 minutes in range of (3.28 ± 0.05) ppm. Changes concentration of ammonia gas result are influenced by the length of time after consuming isotonic beverage.
Photoacoustic imaging of oil-treated tissues for the potential support of halal product identification Widodo, Putut Giri Tulus; Mitrayana, Mitrayana
Journal of Physics: Theories and Applications Vol 9, No 2 (2025): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v9i2.108090

Abstract

Photoacoustic Imaging (PAI) has successfully demonstrated its capability as a non-destructive method for distinguishing biological tissues based on oil absorption characteristics. Chicken meat samples were soaked in coconut oil, sesame oil, and lard for 10 minutes, 60 minutes, and 24 hours. The PAI system employed a 532 nm green laser, condenser microphone, and a two-dimensional scanning stage to capture spatial images. Grayscale and pseudocolor images were analyzed to extract numerical features including mean intensity, standard deviation, and entropy. Results showed that tissues treated with lard consistently exhibited higher values of numerical feature, particularly after 24 hours, compared to samples with vegetable oils. These variations are linked to stronger optical absorption and increased structural complexity caused by oil infiltration. The study demonstrates that PAI can effectively detect oil-specific changes in tissue, suggesting its potential role in supporting halal product verification.
Mathematical Learning Experiment Using Numbered Heads Together And Think Pair Share Models, Examined From The Learning Style Muhaimin, Lukman Hakim; Mukhibin, Ahmad; Mitrayana, Mitrayana; Dasari, Dadan
Journal of Mathematics and Mathematics Education Vol 12, No 2 (2022): Journal of Mathematics and Mathematics Education (JMME)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jmme.v12i2.67990

Abstract

This study aims to determine the effect of the NHT and TPS learning models on mathematics learning outcomes, the impact of student learning styles on mathematics learning outcomes, and the result of the interaction of learning models and student learning styles on mathematics learning outcomes. This type of quantitative research with a quasi-experimental design. The research sample consisted of two classes (experimental and control) which were taken using Cluster Random Sampling from the population of all course VIII students of SMP 4 Muhammadiyah Surakarta in the academic year 2021/2022. Data collection techniques with questionnaires and tests. Before the research, a balance test was conducted to determine whether the two samples had the same initial abilities. The normality test and homogeneity test are prerequisite analysis tests in this study. The data analysis technique using two-way cell analysis of variance is different, with a significance level of 5%. The results showed that the NHT and TPS learning models affected mathematics learning outcomes. The mathematics learning outcomes of students who were given the NHT learning model tended to be better than those who were given the TPS learning model. Learning styles affect the results of learning mathematics. Students with an auditory learning style get better learning results than visual and kinesthetic learning styles. The interaction between the NHT and TPS learning models on mathematics learning outcomes in terms of student learning styles
Performance Characterization of 450 nm Visible Light Based Photoacoustic Imaging for Phantom Imaging of Synthetic Dye Contrast Agents Nugraha, Mahendra Kusuma; Wasono, Moh. Ali Joko; Mitrayana, Mitrayana
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 1 (2022): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i1.49179

Abstract

Performance characterization of 450 nm visible light photoacoustic imaging has been carried out through phantom imaging of methylene blue (MB), methyl orange (MO), and methyl red (MR) dye solutions. The phantom was made of a nylon tube with a diameter of 5.0 mm (outside) and 4.6 mm (inside) having a height of 2.0 mm along with a 6×6 cm black galvanized aluminum plate as the background medium. The nylon tube was filled with each type of solution with varying molecular concentrations of 10, 25, 50 and 100 ppm. Twelve (12) phantom objects were imaged in an area of 10×10 cm. The visible absorption peak known from UV-Visible spectroscopy for each type of solution is at 664 nm (methylene blue), 465 nm (methyl orange), and 522 nm (methyl red). It was also known that the amplitude of PA emissions would increase proportionally to the concentration of dye molecules. Overall, methyl orange solutions had the highest photoacoustic emission amplitude distribution. The analysis showed that the ratio of inner diameter (ID) and wall thickness (WT) between the MB and MO phantom images to the original object were 1:0.83 and 1:0.74 (ID) and 1:3 and 1:1.5 (WT), respectively. On the other hand, the ratio of the outer diameter (OD) of the MR phantom image to the original object is 1:1.28. 
Pengaruh Pemberian Agen Kontras Pewarna Sintetik pada Jaringan Biologis terhadap Hasil Pencitraan Fotoakustik Janna, Miftahul; Mitrayana, Mitrayana; Widyaningrum, Rini
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 2 (2022): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i2.57219

Abstract

An experiment to investigate the influence of synthetic dye contrast agent in photoacoustic imaging of biological tissue was conducted in this study. This study uses a simple phocoacoustic imaging system consists of three main components, i.e., a diode laser, condenser microphone, and a custom-build X-Y stage. Characterization was performed on the main components of the system to obtain the appropriate settings on imaging the biological tissue in this study. The results of the optimal frequency and duty cycle for laser modulation in this study were 19000 Hz and duty cyle of 40%, respectively. The addition of a contrast agent aims to improve the quality of the image by comparing the sample with methylene blue contrast agent, the sample with methyl red and the sample without contrast agent. The increases of acoustic intensity level is in proportion with the contrast agent concentration. The difference in the photoacoustic images reveal that the sample with methylene blue contrast agent has the highest acoustic intensity level compared to both sample with methyl red contrast agent and the sample without contrast agent. Therefore, this research proves that a photoacoustic imaging system can be developed to image biological tissue with a contrast agent and methylene blue has greater potential than methyl red to be used as a contrast agent in photoacoustic imaging.
Visual Analysis on Photoacoustic Emission Images of Synthetic Dye Contrast Agents inside a Simple Closed-Surface Phantom Nugraha, Mahendra Kusuma; Gani, Ernawatil; Mitrayana, Mitrayana
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 15, No 1 (2025): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v15i1.77839

Abstract

A straightforward photoacoustic microscopy imaging system utilizing a laser diode emitting photons at wavelength of 450 nanometers was employed for visualizing contrast-enhanced phantom objects. These phantoms consist of polypropylene tubes with a diameter of 0.3 cm, infused with three types of dye solutions: methylene blue, methyl orange, and methyl red, at varying concentrations of 10 ppm, 25 ppm, 50 ppm, and 100 ppm. In total, twelve phantom objects were imaged, each positioned over a 1x1 cm imaging area constructed from composite galvalume plates. A condenser microphone with audiosonic frequency response was employed as the photoacoustic detector, capturing ones generated by the objects. These emissions were subsequently processed and transformed into two-dimensional polychromatic images. Three primary aspects govern the visual characteristics of each acquired image: (i) the visible light absorption capacity at 450 nanometers for each type of dye; (ii) the concentration of soluble dye molecules; and (iii) the geometry and shape of the polypropylene tube functioning as the closed-surface phantom. It was discovered that utilizing polypropylene tubes as the closed-surface phantom can hinder the propagation of photoacoustic emissions generated by the solution, leading to significantly lower measured photoacoustic intensity than expected. When combined with the intrinsic properties of the contrast agents used, this key factor ultimately shapes the image features obtained from this experiment.
Co-Authors Agung Bambang Setio Utomo Agung Bambang Setio Utomo Ahmad Mukhibin, Ahmad Anas, Ahmad Mujtahid Andreas Setiawan Apriyanto, Donni Kis Arif Faisal Bergitta Dwi Annawati Dadan Dasari Dara Cynthia Nur Cahyani Dewi - Agustina Donni Kis Apriyanto Elah Nurlaelah Ernawatil Gani, Ernawatil Fadli agus triansyah Fajar Wahid Alim Fitri Yanti Frans J. M. Harren Gong Matua Ilham Muhammad Janna, Miftahul Julien Mandon Kusminarto - Luthfan Budi Purnomo M. A. J. Wasono M. R. Ikhsan Mahardika Yoga Darmawan Mahendra Kusuma Nugraha Maqfiroh, Caesarany Mirza Satriawan Mochamad Nurul Amin Moh Ali Joko Wasono Moh. Robikhul Ikhsan Muhaimin, Lukman Hakim Munakhir Mudjosemedi Oey, Lusiana Sandra Pratama, Ananta Kusuma Yoga Pratama, Buky Wahyu Rabuandika, Andi Restu Widiatmono Santi Nurmalia Nuzul Supardi Supardi Triyogatama Wahyu Widodo V.J. Cytasari Widhi Afiatun Nafi’ah Widodo, Putut Giri Tulus Widyaningrum, Rini Yosi Aprian Sari