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All Journal Jurnal Sains Materi Indonesia TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of Degraded and Mining Lands Management The Journal of Pure and Applied Chemistry Research Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer EduChemia: Jurnal Kimia dan Pendidikan Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Journal of Natural Science and Integration Dinamisia: Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Electrical Engineering and Computer Science Jurnal Pendidikan Fisika dan Sains (JPFS) Jurnal Pendidikan Indonesia Gemilang Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Edu Research : Jurnal Penelitian Pendidikan Jurnal Riset Rumpun Ilmu Tanaman
Yus Rama Denny
Department Of Physics Education, University Sultan Ageng Tirtayasa, Banten, 42435, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Pengaruh Carbon Dots Dari Kulit Kentang Dengan Teknik Iradiasi Gelombang Mikro Terhadap Pertumbuhan Tanaman Cabai Selvi Kurnia; Rahmat Firman Septiyanto; Yus Rama Denny M; Isriyanti Affifah
Jurnal Pendidikan Fisika dan Sains (JPFS) Vol 8 No 1 (2025): Maret
Publisher : Pendidikan Fisika, FKIP, Universitas Nahdlatul Ulama Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52188/jpfs.v8i1.1111

Abstract

Carbon Dots (C-dots) are carbon-based nanomaterials that have fluorescent properties, are environmentally friendly, and are easily synthesized from organic waste materials. This research aims to synthesize C-dots from potato skins using the microwave irradiation method as an environmentally friendly and economical alternative to increase the growth of chili plants. Application tests on chili plants were carried out by adding C-dots solution to the growing medium in various concentrations (control, 50 mg/L, 60 mg/L, and 70 mg/L). Observation results showed that chili plants watered with C-Dots showed optimum growth rates found to occur with 50 mg/L carbon dots, compared to the control study, which shows a balance between growth stimulation and effective nutrient absorption without causing toxicity effects on the plants. Then, the resulting C-Dots samples were characterized using a UV-Vis Spectrophotometer using a wavelength range of 200-800 nm. The results of measurements with a UV-Vis spectrophotometer showed absorption at a wavelength of 251 nm and showed an absorbance peak of 4.379.
The Effect of PhET Simulation Learning Media to Improve Science Proses Skills Vira Gusvianti; Rudi Haryadi; Yus Rama Denny Muchtar
Jurnal Pendidikan Indonesia Gemilang Vol 5, No 1 (2025)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/jpig.v5i1.547

Abstract

Students are expected to be able to fulfill physics learning objectives according to the basic abilities established by process skills training. Furthermore, this research aims to determine how PhET media influences student learning outcomes for constant acceleration and uniform acceleration concepts. Thinking when solving problems, facilitating group or individual searches, facilitating conversations between students to motivate them to acquire knowledge, and assessing the problem-solving process. Non-equivalent Control Group Research is a type that is conducted. This design is very similar to a pretest-posttest control group design, except that the experimental and control groups are not randomly selected. After analyzing the data in Excel, continue with SPSS. Based on the research results, the control group that used traditional learning materials had an average posttest score of 67. In contrast, the experimental class that used PhET learning materials to improve student learning outcomes had an average posttest score of 78. 
Development of STEM-Based Solar-Powered Robotics Media for Learning Energy Conversion and Basic Electrochemistry Muhammad Hifni Fajriani; Yus Rama Denny; Lusiani Dewi Assaat
EduChemia: Jurnal Kimia dan Pendidikan Vol 11, No 1 (2026)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/educhemia.v11i1.40628

Abstract

Elementary school students’ understanding of energy concepts remains limited due to their abstract nature and the lack of contextual learning experiences. In basic chemistry education, the concepts of energy conversion and electrochemistry are important for introducing the relationship between energy and electron transfer. This study aimed to develop STEM-based solar-powered robotics learning media and examine its validity, practicality, and effectiveness in facilitating students’ understanding of energy conversion and basic electrochemistry concepts. The study employed a Research and Development (R&D) approach using the ADDIE model. The product was validated by subject matter and media experts and tested using a one-group pretest–posttest design involving 20 elementary school students. Data were analyzed using validity percentages, student response questionnaires, paired-sample t-test, and N-gain analysis. The results showed that the developed media was highly feasible, with validation scores of 88% from subject matter experts and 83% from media experts. Student responses reached an average percentage of 82.5%, indicating that the media was practical for classroom use. The average score increased from 48.25 in the pretest to 83.75 in the posttest, with an N-gain value of 0.70 (high category). Students also demonstrated an initial understanding of electron transfer in generating electric current within solar panels. Therefore, the developed media was found to be valid, practical, and effective in facilitating students’ understanding of energy conversion and basic electrochemistry concepts.
Co-Authors Abdul Hasyim Sodiq Adhitya Trenggono Adhitya Trenggono Akbar Hanif Dawam Akbar Hanif Dawam Abdullah Akbar Hanif Dawam Abdullah Andri Suherman Andri Suherman Dani Gustaman Danu Wijaya Dewi Hastusi Dewi Muliyati Dina Rahmi Darman Dwi Ningsih Susilowati Endi Permata Endi Permata Endi Permata Endi Permata Fitria Riany Eris Ganesa Antarnusa Handoyo Hartono, Rudi Herudin Herudin Hilda Nurwianti Ilham Akbar Darmawan Indri Sari Utami Irvan Akram Irwanto Isriyanti Affifah, Isriyanti Lusiani Dewi Assaat Lusiani Dewi Assaat M Iman Santoso Maelani Marlo Siswahyu Masitoh Mangsur Maudi Yuliana Suryana Mohammad Fatkhurrokhman Muhammad Hifni Fajriani Nurmayulis Rahmat Firman Septiyanto, Rahmat Firman Rocky Alfanz romi wiryadinata Rosdiana Rosdiana Rudi Haryadi Ruth Soukaning Nugrah Djati Sadaharu Hamaguchi Selvi Kurnia Sinda Intandiana Siti Rohanah Suhendar Suhendar Sulaeman Deni Ramdani Syamsul Hidayat Teguh Firmansyah Teguh Firmansyah Tiya Puspita Toto Supriyanto Vaka Gustiono Vira Gusvianti Yudi Guntara Yudi Guntara Yuvita Oktarisa Yuvita Oktarisa