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All Journal Acta Chimica Asiana BIOCHEPHY: Journal of Science Education
Ainun Jariah
Universitas Mataram
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology

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Pengembangan Media Tiga Dimensi Kontekstual Berbahan Dasar Barang Bekas untuk Siswa Kelas IV SD Ainun Jariah; A. Hari Witono; Baiq Niswatul Khair
BIOCHEPHY: Journal of Science Education Vol. 1 No. 1 (2021)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (131.727 KB) | DOI: 10.52562/biochephy.v1i1.23

Abstract

Penelitian ini bertujuan untuk mengetahui pengembangan media pembelajaran tiga dimensi kontekstual berbahan dasar barang bekas untuk siswa kelas IV SD. Jenis penelitian yang digunakan pada penelitian ini adalah penelitian pengembangan yang telah dikembangkan oleh Dick and Carry (1996). Adapun model pengembangannya yaitu ADDIE (Analysis, Design, Development, Implementation, Evaluation). Subyek yang digunakan dalam penelitian ini yaitu terdiri dari 6 orang siswa kelas IV di SDN 10 Mataram. Adapun tekhnik pengumpulan data yang digunakan pada penelitian ini berupa angket. Hasil penelitian menunjukan bahwa media tiga dimensi kontekstual berbahan dasar barang bekas yang telah dikembangkan sudah memenuhi kriteria sangat layak dengan memproleh nilai presentase 98% dari ahli media dan ahli materi memproleh nilai presentase 93% dengan kriteria sangat layak. Sedangkan dari respon siswa memperoleh nilai 95% dan sudah memenuhi kriteria sangat layak untuk digunakan. Dengan demikian dapat disimpulkan bahwa media tiga dimensi kontekstual berbahan dasar barang bekas sudah sangat layak untuk digunakan kepada siswa kelas IV SD pada materi siklus hidup kupu-kupu.
Characterization of M-curcumin complexes (M= Cu, Co, Ag) in turmeric rhizome as sensitizer candidates in dye-sensitized solar cell (DSSC) Ainun Jariah; Saprizal Hadisaputra; Agus Abhi Purwoko
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i1.152

Abstract

This experimental research aims to characterize the complex compound M-curcumin (M=Cu, Co, Ag) based on turmeric (Curcuma longa Linn) rhizome as a candidate for photosensitizer in solar cells. The basic material used for manufacturing the M-curcumin complex compound in this study was curcumin from turmeric rhizome extract added to Cu2+, Co2+, and Ag+ metal ions. The results of the synthesis of the M-curcumin complex were characterized by FTIR and Uv-Vis spectrophotometers. The FTIR spectrophotometer test showed a curcumin compound in the viscous curcumin extract, characterized by an absorption wave number corresponding to the curcumin compound. In the M-curcumin complex, the bond between the metal and the ligand only appears in the Co-curcumin complex at the absorption number of 498.77 cm -1. The results of the UV-Vis spectrophotometer test showed that the maximum wavelength absorption in curcumin extract was 430 nm (abs = 0.688), Cu-Curcumin complex lmax 300 nm (abs = 2.573), Co-curcumin complex lmax 425 nm (abs = 1.067), and complex Ag-Curcumin lmax 430 nm (abs = 1.36). The UV-Vis and FTIR characterization showed that the Co-curcumin complex has good potential compared to the organic compounds (curcumin) and can be used as an alternative photosensitizer in solar cells
Co-Authors A. Hari Witono Agus Abhi Purwoko Baiq Niswatul Khair Saprizal Hadisaputra