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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Jurnal Informatika dan Sistem Informasi
Safitri, Siska
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Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Environmental Science

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E-Library Berbasis Web Menggunakan Model Prototipe Sumardiono, Sumardiono; Safitri, Siska; Soipah
Jurnal Informatika dan Sistem Informasi Vol. 10 No. 2 (2024): Jurnal Informatika dan Sistem Informasi
Publisher : Universitas Ciputra Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37715/juisi.v10i2.4974

Abstract

Selama era teknologi ini, pengembangan informasi yang turut ikut, seperti halnya peranan perpustakaan benar-benar penting menjadi bagian dari lembaga yang bertugas menyisipkan beraneka asal-usul informasi. Perpustakaan sebagai layanan penyedia informasi mencakup aktivitas seperti pengumpulan, pengolahan, penyajian, distribusi, serta pemeliharaan dan pelestarian informasi. Layanan perpustakaan dan kegiatan lainnya masih bersifat pencatatan yang belum dilakukan secara komputerisasi. Penelitian ini bertujuan merancang sebuah sistem informasi perpustakaan berbasis web (e-library) yang dapat mempermudah dalam layanan perpustakaan, seperti keanggotaan dan pengumpulan data buku, serta administrasi lainnya. Metode penelitian ini menggunakan pendekatan deskriptif-kualitatif serta model prototipe, yaitu komunikasi & rencana cepat, analisis kebutuhan, perancangan, pengkodean, pengujian sistem alpha dan beta. Hasil dari pengujian secara alpha diperoleh hasil valid dari setiap aplikasi yang diujikan, dan hasil uji secara beta dengan random sampling sebanyak 20 responden, maka diperoleh nilai kegunaan (functional) sebesar 84%, nilai kemudahan (usability) sebesar 79%, dan nilai kepuasan (satisfaction) sebesar 84,5%, sehingga dapat disimpulkan bahwa pengujian sistem e-library ini memiliki rata-rata 82,63% dan dapat dikatakan sangat layak untuk digunakan.
Study of Congo Red Adsorption by Chitosan-Graphene Oxide (Chitosan-GO) Composite Synthesize with Hydrothermal Synthetic Method: Optimization and Determination Condition Desnelli, Desnelli; Safitri, Siska; Musifa, Eva; Hamidah, Afreni; Suheryanto, Suheryanto; Mara, Ady; Said, Muhammad
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 10, No 2 (2025): June 2025
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v10.i2.101

Abstract

This research aims to synthesize chitosan-graphene oxide (chitosan-GO) material using the hydrothermal method at varying material ratios and adsorption studies on Congo red. Chitosan-GO composites were synthesized with mass ratios of (1:1), (1:3) and (1:5). The synthesized chitosan-GO composite was applied to absorb Congo red dye. The adsorption process is carried out by varying pH, contact time, concentration and temperature. The chitosan-GO composite was characterized using XRD, BET and SEM-EDS. The results of XRD characterization of the chitosan-GO composite with a ratio of 1:1 showed a diffractogram of 2θ = 22.3°, at a ratio of 1:3 the diffractogram angle was 2θ = 22.1°, while the ratio (1:5) of the diffractogram peak obtained was 2θ = 22.8°. The surface area obtained in chitosan-GO composite was 11.60 m2/g. The morphology of the chitosan-GO composite (1:5) is in the form of crystalline lumps with the constituent elements C (65.98%), O (32.68%), Na (0.22%) and S (0.09%). Adsorption of Congo red dye using chitosan-GO composite obtained optimum conditions at pH 7, contact time 50 minutes, Congo red concentration 45 mg/L and temperature 50°C. The adsorption isotherm is in accordance with the Langmuir isotherm model and the maximum adsorption capacity (Qm) is 10.245 mg/g.
Co-Authors Ady Mara, Ady Afreni Hamidah Desnelli Desnelli MUHAMMAD SAID Musifa, Eva Soipah Suheyanto Suheryanto Sumardiono Sumardiono, Sumardiono