Abstrak: Penilitian ini bertujuan untuk mengetahui pengaruh video praktikum dengan modul elektronik terhadap keterampilan proses dan besar peningkatan keterampilan proses pada materi stokiometri siswa kelas X SMAN 2 Tidore Kepulauan.Jenis penelitian yang digunakan adalah penelitian eksperimen. Desain penelitian adalah OneGroup Pretest-Postest Design. Populasi penelitian adalah siswa kelas X SMAN 2 Tidore Kepulauan. Sampel penelitian adalah kelas X1 yang dipilih secara random. Teknik analisis data melalui analisis statistik deskriptif dan analisis statistik inferensial menggunakan SPSS 16. Hasil uji hipotesis diperoleh sig< 0,05 dan t hitung > t tabel maka penggunaan video praktikum dan modul elektronik berpengaruh terhadap keterampilan proses siswa. Nilai Gain adalah 85% menunjukkan interpretasi tinggi terhadap peningkatan keterampilan proses siswa. Kata kunci: keterampilan proses, modul elektronik, video praktikum Abstract: This study aimed to determine the effect of practicum video with electronics module toward process skills and how far the influence of stoichiometry materials of the grade X of SMA

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In this work, metformin HCl was encapsulated on citric acid activated montmorillonite as drug delivery system. The as-synthetized drug delivery systems were characterized by using FTIR and X-ray diffraction. FTIR spectra showed the presence of bending vibration of N-H from primary amines group and streching vibration of C=N at 1635.64 and 1506.41 cm -1 , respectively. X-ray diffraction pattern also showed a widening of the diffraction peaks of montmorillonite after encapsulated by metformin HCl. In vitro drug release results showed that the release of metformin HCl from the drug delivery system in simulated intestinal fluid (pH 7.4) higher than that in simulatied gastric fluid (pH 1.2) with a value of drug release of 61.44 % and 39.41 %. Metformin HCl release kinetics at each pH follow the zero-order model (pH 1.2 with R = 0.9924; pH 7.4 with R = 0.9972) suggested diffusion-controlled release mechanism.