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All Journal Jurnal Keteknikan Pertanian Jurnal Teknologi Pertanian JRPM (Jurnal Review Pembelajaran Matematika) Adi Widya : Jurnal Pengabdian Masyarakat AGROTECH : JURNAL ILMIAH TEKNOLOGI PERTANIAN Jurnal Ilmiah Padma Sri Kreshna Jurnal PEKA (Pendidikan Matematika) Jurnal Pendidikan Matematika Indonesian Journal of Mathematics Education Hipotenusa: Journal of Mathematical Society Journal on Mathematics Education Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir
Masrukan Masrukan
Universitas Widya Mataram
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Environmental Science Mathematics Social Sciences Other

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Bibliometric Analysis: Problem-Based Learning, Problem-Solving Skills, Self-Regulated Learning Assisted by Geogebra in Vocational High School Setyani, Arie; Masrukan; Kurniasih, Ary Woro
Indonesian Journal of Mathematics Education Vol. 8 No. 1 (2025): Indonesian Journal of Mathematics Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijome.v8i1.2274

Abstract

This study aims to analyze the bibliometric mapping of vocational high school mathematics research from 2020 to 2024 to address the research gap on problem-solving skills in the problem-based learning model assisted by GeoGebra, with a focus on students’ self-regulated learning in vocational high school. The data collected focuses on the keywords "mathematics, problem-solving, self-regulated learning, GeoGebra" to identify journals published between 2020 and 2024, using Google Scholar as the data source through Publish or Perish to gather data and Harzing's VOSviewer for bibliometric mapping. This study identified seven articles related to the keywords. The research follows the PRISMA systematic review method. The findings indicate that publications on problem-solving skills within the problem-based learning model assisted by GeoGebra, viewed from students' self-regulated learning in vocational high school, still have the potential to grow in the coming years. Moreover, problem-based learning positively impacts students' self-regulated learning and problem-solving skills in vocational high school.
Systematic Review: Kemampuan Representasi Matematika dalam Pendidikan Selama 2019-2024 Maulana, Bagus Surya; Junaedi, Iwan; Munahefi, Detalia Noriza; Masrukan; Cahyono, Adi Nur
Jurnal PEKA (Pendidikan Matematika) Vol. 8 No. 2 (2025): Jurnal PEKA (Pendidikan Matematika)
Publisher : Program Studi Pendidikan Matematika Universitas Muhammadiyah Sukabumi (UMMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37150/jp.v8i2.3225

Abstract

Mathematical representation encompasses verbal, visual, and symbolic forms, allowing students to articulate and manipulate mathematical ideas effectively. The review indicates that students with strong representation abilities perform better academically, as these skills facilitate deeper comprehension and application of mathematical principles. A systematic review of mathematics representation ability in education during 2019-2024 in this study from 2019 to 2024, Data collection was carried out by reviewing or reviewing all articles on mathematics representation ability in education published in the period 2019-2024. The articles used in this study were 3 articles from Scopus, and 2 articles from Google Scholar from international and national journals with the help of Publish or Perish software and VOSViewer. The results of this literature review suggest that specific research needs to be conducted on how to improve mathematics representation abbility, the school levels tested, as well as their applicability in education.
Meta-Synthesis: The Influence of Mathematical Anxiety on Critical Mathematical Thinking Cahya, Nabella Dwi; Mariani, Scolastika; Agoestanto, Arief; Masrukan
JRPM (Jurnal Review Pembelajaran Matematika) Vol. 9 No. 1 (2024)
Publisher : Department of Mathematics Education, Faculty of Tarbiyah and Teacher Training, UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/jrpm.2024.9.1.52-64

Abstract

The purpose of this research is to describe the influence of mathematics anxiety on students' mathematical critical thinking abilities. The research method used in this study was meta-synthesis, a qualitative systematic review that analyzed four relevant articles with the research title. The steps involved formulating the research problem, followed by searching for previous relevant research with the same title and then analyzing it in depth. The data collection technique used non-tests by examining previous research with similar problems to obtain results and conclusions. The study surveyed 4 articles, consisting of 3 national journal articles and one international journal article. The analysis of the four related articles resulted in the conclusion that math anxiety has a negative impact on students' mathematical critical thinking abilities.
Software Development of Palm Oil Seed Authentication System Based on Ultrasonic Waves Pratopo, Lukito Hasta; Thoriq, Ahmad; Ciptaningtyas, Drupadi; Nanda, Muhammad Achirul; Fahrizi, Ahmad Luthfi; Hidayat, Darmawan; Masrukan; Maskromo, Ismail
Jurnal Keteknikan Pertanian Vol. 13 No. 1 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.1.115-131

Abstract

Fake palm oil seeds pose a substantial economic threat, which makes their authentication crucial. However, distinguishing between genuine and fake seeds remains a challenge. This study explored the potential of ultrasonic technology to measure shell thickness as a distinguishing factor based on the reported variations between the two types. Ultrasonic wave measurement software was developed using Arduino Uno to facilitate the analysis. The results highlight the complexity of accurately measuring the seed shell thickness owing to high attenuation. Micro-CT imaging confirmed the presence of pores within the seed structure, which significantly scattered and absorbed ultrasonic waves, limiting the penetration depth and accuracy. Despite these obstacles, the developed software exhibited promising capabilities, accurately determining the thickness or propagation speed with a high-resolution time-of-flight measurement of up to 62.5 nanoseconds. Additionally, the software is capable of sampling ultrasonic signals at frequencies up to 178 kHz. Although the software performs well under specific conditions, further advancements in ultrasonic technology are necessary to mitigate porosity-related limitations and enhance the effectiveness of seed authentication methods, particularly in transducer selection and measurement techniques such as Harmonic or QSC testing.
PENGARUH TEMPERATUR DAN WAKTU HOMOGENISASI TERHADAP KARAKTERISTIK PELAT PADUAN AG3NE Hadijaya; Siti Aidah; Masrukan
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 24 No. 2 (2018): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2018.24.2.4391

Abstract

Investigation on the effects of homogenization temperature and time on AG3NE alloy plate has been done. AG3NE alloy is used as cladding material of research reactor fuel. Ingot of AlMgFeSi melt was sampled for several tests and examination such as chemical composition, hardness, microstructure, phase, density and corrosion. Composition analysis shows that the alloy is composed of Al= 96.110%, Fe= 0.188%, Mg= 2.333% and Si= 0.355%.The hardness value for AG3NE is 153.33 HV for samples treated with rapid cooling and 72.70 HV for samples treated with slow cooling. Microstructure examination with optical microscope shows that AG3NE alloy without homogenization consists of flat grains with a fraction of dendrite of 0.02 mm mean diameter, while samples homogenized at 500°C at varied temperatures of 1, 2, 3, and 4 hours consist of grains with 0.01 mm, 0.02 mm, 0.03 mm and 0.04 mm respectively. Phase analysis with X-Ray Diffractometer indicates the existence of Al (ά) and FeSiAl5 phases at 2θ of 38.24° - hkl (119) and 44.446° - hkl (209) with 100% and 76.6% intensity respectively. The measured density of AG3NE, however, is similar to that of AlMgSi as material for comparison, the values of which are 2.6893 ± 0.0013 g/cm3 for AG3NE and 2.6910 ± 0.0283 g/cm3 for AlMgSi. Corrosion rate analysis shows that the corrosion rate for AG3NE is lower than that for AlMgSi. Based on the characterization for chemical composition, microhardness, microstructure, density and corrosion rate, it is concluded that AG3NE alloy can be used as a candidate for cladding material for research reactor fuel.
PENGARUH TEMPERATUR DAN KOMPOSISI Nb TERHADAP INTERDIFUSI PADUAN U-Zr-Nb Maman Kartaman Ajiriyanto; Masrukan; Fajar Al Afghani; Yanlinastuti Yanlinastuti
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 27 No. 3 (2021): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2021.27.3.6503

Abstract

A simulation of U-Zr-Nb intermixed fuel has been carried out with aluminum plates. Initially, U-6Zr-2Nb, U-6Zr-5Nb, and U-6Zr-8Nb alloy ingots were made using an electric arc melting furnace. The ingot obtained was cut into pieces with a thickness of 2-3 mm and a diameter of about 5-6 mm, then it was covered Al plate on one side and pressed. After pressing, the alloy ingots of U-6Zr-2Nb, U-6Zr-5Nb, and U-6Zr-8Nb were heated at temperatures of 350 and 450 oC for 1 hour. The ingot was subjected to several tests, namely microstructure examination using optical microscope and Scanning Electron Microscope (SEM) equipped with Energy Dispersive Spectrometer (EDS), hardness test using microhardness tester, and phase observation using X-ray diffractometer (XRD). The results of microstructure examination show that the boundaries between the U-6Zr-2Nb, U-6Zr-5Nb, and U-6Zr-8Nb layers (interfaces) and the Al layer were clearly visible. The higher of the Nb content, the denser the interface between the two layers. For the microhardness test, we found that the hardness at the interface was difficult to measure, while the U-Zr-Nb region shows an increase in hardness for heating from 350 to 450 oC, while in the Al section there is a decrease in hardness when the heating temperature increases from 350 to 450 oC. UO3 compounds were formed in all test samples while the γ-U phase was formed in U-6Zr-2Nb samples both heated at temperatures of 350 and 450 oC.
IDENTIFIKASI FASA PADA PELET BAHAN BAKAR U-ZrHx HASIL PROSES SINTER DENGAN ATMOSFER NITROGEN Masrukan; Jan Setiawan; Dwi Biyantoro
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 23 No. 3 (2017): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2017.23.3.3641

Abstract

Phases identification of U-ZrHX fuel pellets sintered under nitrogen atmosphere has been carried out. This sintering process is intended to obtain higher density pellets that meet the requirements for use as a fuel in pressurized water reactor (PWR). The results of this study are expected to be used for the determination of phase and density changes occurred in U-ZrHx pellets at various Zr concentrations after sintering at various temperatures. PWR fuel from U-ZrHx pellet needs to be sintered to increase its density. At first, pellets made from U-ZrHx powder with Zr composition of 35, 45 and 55 wt.% through a pressing process at a pressure of 509-637 MPa. The resulted U-ZrHx green pellets were subsequently sintered under nitrogen gas atmosphere at 1200 °C and 1300 °C for a fixed sintering time of one hour. Phase analysis of the sintered U-ZrHx pellets was done by X-ray diffraction (XRD) technique and the data obtained were processed by using HighScore Plus software. The test results with XRD indicate the formation of phases such as U(ZrHr2), UO3, UO2, and Zr. The UO2 and Zr phases were characterized for their density, lattice parameter and percentage of weight. In this experiment it is desired to obtain U-ZrHx with high density without the formation of many phases. Density measurement shows that the density of zirconium metal and UO2 decreases with increasing sintering temperature (from 1200 °C to 1300 °C), while the lattice parameter increases with increasing sintering temperature. Data calculation of weight percentage for sintering at 1300 °C shows that the percentage values of the resulted zirconium metal and uranium dioxide are the closest to their theoretical calculation results.
KARAKTERISTIK INGOT PADUAN U-Zr-Nb PASCA PROSES QUENCHING Masrukan; Jan Setiawan
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 23 No. 2 (2017): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2017.23.2.3522

Abstract

The U-Zr-Nb heat-quenching experiment has been subjected to various Nb compositions. Ingots of U-Zr-Nb alloys with varying Nb compositions are 1%, 4% and 7% and a fixed 10% Zr composition is made by melting U, Zr and Nb metals in an electric arc furnace. The quenching experiment is intended to convert an unstable phase αU into stable γU phase. Quenching experiment is intended to convert an unstable phase αU phase into a stable γU phase. In quenching experiments, the U-10Zr-1Nb, U-10Zr-4Nb, U-10Zr-7Nb ingot ingredients were fed into box that made of steel plate and then fed into a heating furnace and heated at 900 C and held for 2 hours for then cooled rapidly in water. After quenched then subjected to phase testing and microstructure observation. The phase test is performed using X-ray diffraction (XRD) and the data is processed using HighScore software, while the microstructure observation using optical microscope. Test results with XRD showed that the U-10Zr-1Nb alloy before quenched consisted only of an αU phase, the U-10Zr-4Nb alloy consist of 23,1504% αU phases and 76,8495% γU phases, while U-10Zr-7Nb consist of 34,1873% αU phases and 65,8127% γU phases. For U-10Zr-1Nb alloys after quenched consist of an αU phase, the U-10Zr-4Nb alloy consist of 44% αU phases and 46% γU phases, the U-10Zr-7Nb alloy consisted of 19% αU and 81% phases γU. For U-10Zr-1Nb alloys after quenched consist of an αU phase, the U-10Zr-4Nb alloy consisted of 44,6711% αU phases and 55,3289% γU phase, the U-10Zr-7Nb alloy consist of 17,9918% αU phases and of 82,0082% γU phases. The results of the theoretical density analysis on the phases formed on U-10Zr-1Nb, U-10Zr-4Nb, U-10Zr-7Nb alloys both before and after quenched were obtained that ingot of U-10Zr-1Nb, U-10Zr-4Nb alloy U-10Zr-7Nb shows that the αU and γU phase densities decrease slightly if the Nb content is lower. Meanwhile, microstructure observation results showed that in the higher of Zr content (7% Nb) will form smaller grains (fine) after quenching. It can be concluded that the quenching process of U-10Zr-1Nb, U-10Zr-4Nb and U-10Zr-7Nb alloys will change the phase that is from the αU phase to γU and the change the microstructure formed. The microstructural changes show that in the higher Nb content, the grains that are formed become finer.
PEMISAHAN Zr – Hf SECARA SINAMBUNG MENGGUNAKAN MIXER SETTLER Dwi Biyantoro; Isyuniarto; Masrukan
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 22 No. 3 (2016): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2016.22.3.3184

Abstract

Separation of Zr - Hf continuously using mixer settler 16 stage has been done. The feed solution is zircon nitrate concentration of Zr = 30786 ppm and Hf = 499 ppm. As the solvent used extractant 60 % TBP in 40 % kerosene. Nitric acid solution used srubbing 1 M. The feed entered into stage to 5 is contacted with solvents direction on the stage to 16 and the scrubbing solution enter the stage to 1. The purpose of this study is to separate Zr and Hf of the results from the process of zircon sand using solvent TBP using 16 stage mixer settlers. Analysis of the feed and the results of the separation process for zirconium (Zr) using X-ray fluorescence instrument which hafnium (Hf) using Neutron Activation Analysis (AAN). Parameter study done of acidity variation of nitric acid in the feed and time variation in various stirring speed. From the research the separation of Zr-Hf, the optimum conditions in acidity feed 4 N HNO3, equilibrium was received after 3 hours, and stirring speed of 3300 rpm obtained extract of zircon (Zr) concentration = 28577 ppm (efficiency of Zr = 92,76 %) with impurities of hafnium (Hf) = 95 ppm.
KORELASI KOMPOSISI UNSUR TERHADAP SIFAT TERMAL SERBUK BAHAN BAKAR U-ZrHX Masrukan; M. Husna Alhasa; Yanlinastuti Yanlinastuti
Urania: Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol. 22 No. 2 (2016): Urania : Jurnal Ilmiah Daur Bahan Bakar Nuklir
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/urania.2016.22.2.3090

Abstract

Analysis has been conducted to determine the composition correlation on the thermal properties of the powder fuel U-ZrHx. U-ZrHx powder made from the process hydriding U-Zr ingot, where the ingot is the result of U-Zr and Zr U metal melting. In this experiment made three variations of powders, namely U-35ZrHx, U-45ZrHx, and U-55ZrHx. Need for determination of the thermal properties of Zr was to determine the effect of the nature of the transformation of Zr levels of heat from the fuel. At first, U and Zr metal is melted in electric arc furnaces to produce ingot U-Zr. U-Zr ingot then made powder with hydridring-milling techniques to produce U-Zr powder. U-Zr powder composition analyzed using techniques spectroscopy atomic absorption (AAS) and UV-Vis spectroscopy. The results of composition analysis showed that the analysis to determine the content of U and Zr nearly all the test samples analyzed have quite a big difference between the content of U and Zr as determined by the results of the analysis of U and Zr exception analysis result in powder U-45Zr which differ only 0.609%. From the analysis of impurities obtained that nearly all the impurities that exist still meet the requirements for fuel unless the elements Fe, where elements of the existing Fe amounted to 382.912 g/g while the requirement of £ 250 mg /µg. Testing conducted heat capacity in the temperature range 35 ° C to 437 ° C showed that the capacity were greatest powder 35ZrHx U-with a value heat capacity of 0.13 J / g.oC. Meanwhile, test results obtained transition phase change that the U-45ZrHx undergo two stages of reaction with phase change. It can be concluded when seen from the content of U and Zr cannot be used for fuel, while the analysis of the content of impurities found that all the elements that are still eligible for the fuel unless the element Fe. For the analysis of the thermal properties are the heat capacity of the heat capacity of the highest values obtained in powder U-35ZrHx, while the transition from the testing phase changes shows that the U-45ZrHx undergo two stages of reaction with phase change. There is an effect of the composition on the thermal properties, where the higher the content of Zr, the value of uranium zirconium hydride heat capacity is lower.
Co-Authors Adi Nur Cahyono Ahmad Thoriq Alifah Irmawati Ambar Rukmini Arief Agoestanto Ary Woro Kurniasih Bertina, Bernadeta Wiska Pramestia Cahya, Nabella Dwi Darmawan Hidayat Darmawan, Eman Drupadi Ciptaningtyas Dwi Biyantoro Dyah Titin Laswati Etty Mutiara Fahmi Rafika Perdana Fahrizi, Ahmad Luthfi Fajar Al Afghani Fiersta, Nissa Clara Firsta, Nissa Clara Ganisa Kurniati Suryaman Gorotomole, M. Alamin Hadijaya Halim, Mansyur Ali Idra Faudu, Muhammad Iqbal Kharisudin Ismail Maskromo Isnarto Isyuniarto Iwan Junaedi Jablonski, Simone Jan Setiawan Khumairo, Siti Latifatul Kristiana Sri Utami Kuntjahjawati SAR Ludwig, Matthias M. Husna Alhasa Maman Kartaman Ajiriyanto Maulana, Bagus Surya Meniek Rachmawati Muhammad Achirul Nanda Mujinem Mujinem Mulyono Munahefi, Detalia Noriza Nereroan, Yuliana Nur Purwandhani, Siti Oehler, Deng-Xin Ken Opsa Lena Pamungkas, Mieko Taqwa Pratopo, Lukito Hasta Purwadi, Dani Radika Widiatmaka Regilia, Dety Rukmi, Kuntjahjawati Susilo Adi SAR, Kuntjahjawati Scolastika Mariani Setyani, Arie Siti Aidah Sri Lestari Harjanta Syarif Hakim, Isna Tunnisa, Fitra Umar Santoso Yanlinastuti Yanlinastuti