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APPLICATION OF CARBON DOTS FROM PAPAYA PEEL USING THE OVEN HEATING METHOD ON SPINACH PLANT GROWTH Bunga Kusuma Putri; Rahmat Firman Septiyanto; Devi Ayu Nur'aini
Pascal: Journal of Physics and Science Learning Vol 10, No 1 (2026): JUNI
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/pascal.v10i1.13665

This study aims to synthesize carbon dots (C-dots) from papaya peel using the oven heating method and to examine their effect on spinach growth. The synthesis process involved carbonization, grinding, dissolution, and filtration to obtain a clear C-dots solution. UV light testing showed fluorescence emission, indicating the formation of carbon nanoparticles. C-dots were applied at concentrations of 0.5 g/L and 1 g/L, with distilled water as the control. Plant growth was observed through plant height for seven days. The results showed that C-dots improved plant growth compared to the control. The 1 g/L concentration was more effective in the early phase, while 0.5 g/L showed more stable effects in the later phase. These findings indicate the potential of C-dots as an environmentally friendly nanotechnology-based plant growth enhancer. Further research is recommended to explore other concentrations and growth parameters.

Exploring Students’ Conceptual Understanding of Newton’s Law in Senior High School Devi Ayu Nur'aini; Sandi Danar Cynthia Sari; Siti Nurasiah; Reva Amelia; Helsa Putri Pratama; Desy Nurfiyasari
Jurnal Pendidikan Abad Ke-21 Vol 3, No 2 (2025)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/jpak.v3i2.776

This study aims to explore high school students' understanding of Newton's laws of motion. The research method used is qualitative descriptive, with data collection through a two-tier diagnostic test. The instrument not only measures correct answers but also explores the reasons behind students' choices. Data analysis was conducted by dividing students' understanding into four categories: (1) Understanding the concept; (2) Misconception; (3) Not understanding the concept; and (4) Guessing. The results showed that students understood the concept of changes in velocity due to changes in the direction of force, with 56.2% of students understanding the concept. The largest misconception was found in the subtopic of Newton's Third Law, which reached 68.5%. Meanwhile, the percentage of students who did not understand the concept was lower than that of students who had misconceptions in all subtopics. These findings confirm that the majority of students did not understand the concept, but had initial understandings that were unscientific or inappropriate. Therefore, teachers need to prepare learning strategies that are not only informative but also reinforce concepts.

Analisis Hubungan Keterampilan Proses Sains dan Berpikir Kreatif dalam Proyek STEAM pada Siswa Sekolah Dasar Annisa Ulfa Yana; Devi Ayu Nur'aini
Edukasi Tematik: Jurnal Pendidikan Sekolah Dasar Vol. 6 No. 3 (2025): Edukasi Tematik: Jurnal Pendidikan Sekolah Dasar
Publisher : Program Studi Pendidikan Guru Sekolah Dasar - Universitas San Pedro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59632/edukasitematik.v6i3.686

Penelitian sebelumnya lebih banyak berfokus pada jenjang pendidikan yang lebih tinggi atau memisahkan fokus pada salah satu keterampilan, sehingga kurang memberikan gambaran komprehensif tentang hubungan antara keterampilan proses sains (KPS) dan berpikir kreatif (KBK) dalam pembelajaran STEAM pada siswa sekolah dasar. Penelitian ini bertujuan untuk untuk menganalisis korelasi dan kontribusi KPS dan KBK pada siswa sekolah dasar yang telah mengimplementasikan proyek STEAM dalam pembelajarannya. Penelitian ini menggunakan pendekatan kuantitatif dengan desain korelasional yang melibatkan 29 siswa kelas VI SDN 4 Banjar Agung tahun pelajaran 2025/2026. Instrumen penelitian yang digunakan berupa lembar observasi yang dikembangkan sesuai dengan indikator KPS dan KBK. Analisis data menggunakan uji korelasi Pearson dan regresi linear. Hasil penelitian menunjukkana adanya hubungan positif yang sangat kuat dan signifikan antara KPS dan KBK (r = 0,833; p < 0,05), serta KPS memberikan kontribusi sebesar 69,4% terhadap perkembangan KBK (R2 = 0,694). Temuan ini menegaskan bahwa implementasi proyek STEAM efektif dalam mengembangkan keterampilan proses sains dan berpikir kreatif siswa sekolah dasar.

ANALYSIS OF CHANGES IN TEMPERATURE, HUMIDITY, AND RAINFALL PARAMETERS IN RELATION TO TRENDS IN DENGUE FEVER (DBD) CASES IN TANGERANG REGENCY Muhamad Rayhan Dwi; Yayat Ruhiat; Devi Ayu Nur'aini
Pascal: Journal of Physics and Science Learning Vol 10, No 1 (2026): JUNI
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/pascal.v10i1.14015

The high epidemiological burden of dengue fever in Tangerang Regency, a densely populated lowland area in Banten, provided the background for this study. Its primary objective was to describe climate fluctuations and analyze the partial relationships between temperature, humidity, and rainfall and dengue fever cases using secondary data from 2020 to 2024. The method combines physical descriptive analysis and Spearman’s rank correlation test. Visualization results show an optimal physical equilibrium in 2024 that triggered the highest spike in cases (5,088). Temperature showed a weak negative correlation (–0.300), humidity a strong positive correlation (0.600), and rainfall a very strong positive correlation (0.700), although sample limitations resulted in formal non-significance (p > 0.05). Physically, rainfall provides breeding sites for larvae, while humidity extends the lifespan of the vector; however, extreme rainfall triggers a mechanical flushing effect. These findings emphasize the need for public health agencies to incorporate rainfall and humidity indicators into early warning systems to strengthen preventive mitigation measures ahead of the peak of the transmission season.

APPLICATION OF CARBON DOTS FROM PAPAYA PEEL USING THE OVEN HEATING METHOD ON SPINACH PLANT GROWTH Bunga Kusuma Putri; Rahmat Firman Septiyanto; Devi Ayu Nur'aini
Pascal: Journal of Physics and Science Learning Vol 10, No 1 (2026): JUNI
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/pascal.v10i1.13665

This study aims to synthesize carbon dots (C-dots) from papaya peel using the oven heating method and to examine their effect on spinach growth. The synthesis process involved carbonization, grinding, dissolution, and filtration to obtain a clear C-dots solution. UV light testing showed fluorescence emission, indicating the formation of carbon nanoparticles. C-dots were applied at concentrations of 0.5 g/L and 1 g/L, with distilled water as the control. Plant growth was observed through plant height for seven days. The results showed that C-dots improved plant growth compared to the control. The 1 g/L concentration was more effective in the early phase, while 0.5 g/L showed more stable effects in the later phase. These findings indicate the potential of C-dots as an environmentally friendly nanotechnology-based plant growth enhancer. Further research is recommended to explore other concentrations and growth parameters.

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