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All Journal Jurnal Pendidikan Usia Dini Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal KALANDRA
Widiasih
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Materials Science & Nanotechnology Physics

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Journal : Jurnal Penelitian Pendidikan IPA (JPPIPA)

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Thermal Conductivity of Liquid Lead for the Fast Nuclear Reactor Coolant, Calculated by the Green-Kubo Method Using Molecular Dynamics Simulation Artoto Arkundato; Ratna Dewi Syarifah; Lutfi Rohman; Wenny Maulina; Widiasih
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.6102

Abstract

Comprehensive information about nuclear reactor coolant materials for application in heat-transfer systems is very important. One important physical property that needs to be known is the thermal conductivity. The goal of this work is to predict the thermal conductivity value of the liquid lead, which is one of the important candidates for cooling materials for Gen-IV fast nuclear reactor designs. The thermal conductivity of liquid lead in this study was predicted using the Green-Kubo scheme and the molecular dynamics (MD) computational method to collect the simulation data. The MD simulation was done in the NVT ensemble, using the Lennard-Jones interaction potential. We observe the thermal conductivity of the liquid lead can be studied based on the diffusion physical process. The thermal conductivity of the liquid lead obtained from this research is λ = 0.0113T + 8.8539 [W/mK]. As a conclusion, this result is very suitable, compared with the available experimental data, then the Green-Kubo method can be used to calculate the thermal conductivity of liquid metal as lead.
Implementation of the Jigsaw Model Assisted by E-Modules in Science Learning on Ecosystem Material for Class V Elementary Schools Tri Susilowati; Bambang Ismanto; Widiasih
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.6208

Abstract

Critical thinking skills, independence, and low learning outcomes for most students are the essential background for this research. This problem causes the learning process carried out in class not to run optimally. This research aims to determine the influence of implementing the Jigsaw learning model assisted by e-modules on students' critical thinking abilities, independence, and learning outcomes. The approach in this research is quantitative with a Quasi-Experimental research type. The design of this research is Posttest Control Group Design. The population is classes VA and VB using total sampling techniques where all population members are used as research samples. Data collection techniques include questionnaires (measuring critical thinking abilities and learning independence) and tests to measure learning outcomes. The analysis shows the influence of using the Jigsaw-type cooperative learning model assisted by e-modules on critical thinking skills, independence, and student learning outcomes in grade 5 elementary school ecosystem material. Thus, learning with the Jigsaw model can overcome students' learning problems and needs.
Co-Authors ANDAYANI ANDAYANI Artoto Arkundato Bambang Ismanto Dodi Sukmayadi Heni Safitri Lutfi Rohman Pekan Pandiangan Ratna Ekawati Sandra Sukmaning Adji Siti Aisyah Siti Hadianti Suryo Prabowo Syarifah, Ratna Dewi Tri Susilowati Tuti Purwoningsih Wenny Maulina, Wenny Zakirman Zakirman -