Claim Missing Document
Check
Articles

Found 23 Documents
Search

POTENSI KITOSAN SEBAGAI PENGAWET PRODUK HASIL PERIKANAN DI DESA PULOT KABUPATEN ACEH BESAR Yulvizar, Cut; Zaidiyah, Zaidiyah; Fahmi, Chairul; Amalia, Amalia; Masykur, Masykur; Misrahanum, Misrahanum; Irhamni, Irhamni
JURNAL PENGABDIAN MAHAKARYA MASYARAKAT INDONESIA Vol 3, No 1 (2025): JURNAL PENGABDIAN MAHAKARYA MASYARAKAT INDONESIA
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pemasi.v3i1.45735

Abstract

The processing activities of salted fish and peda, carried out by the Setia Bakti Women's Cooperative and the Kamboja Group, demonstrate considerable potential for further development. This potential is supported by the abundance of marine resources, the simplicity of the processing technology, the increased demand for salted fish and peda during the month of Ramadan, and the presence of numerous community-based traditional fish processors. It is imperative to ensure the shelf life of salted fish and peda, in order to maintain product quality during distribution and consumption. Salted fish has been shown to have a longer shelf life, remaining stable for up to two weeks without significant changes, whereas peda has been found to deteriorate within 25 days. This limitation can be addressed through the improvement of raw material quality, processing methods, packaging, and storage practices. The enhancement of product quality, the achievement of a more appealing flavour profile, the assurance of hygienic packaging, the provision of competitive pricing, and the elimination of the use of hazardous food additives are of paramount importance. A promising approach involves the use of natural preservatives such as chitosan, derived from shrimp, crab, and squid shells, which has the potential to extend shelf life and broaden market reach. Furthermore, the advancement of conventional fish processing can be further facilitated through structured interventions, encompassing research, training, the provision of infrastructure, and community empowerment. These interventions are designed to enhance business performance and improve the socio-economic conditions of local processors.
Penerapan Model Pembelajaran Learning Cycle 9E pada Materi Ikatan Kimia Untuk Meningkatkan Hasil Belajar Siswa Hayatinupus, Windri; Irhamni, Irhamni; Assaat, Lusiani Dewi
Indonesian Journal of Education and Development Research Vol 3, No 2 (2025): Juli 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/ijedr.v3i2.6336

Abstract

Penerapan model pembelajaran dengan berbasis teknologi sangat penting untuk melatih kemampuan siswa dalam memecahkan masalah di zaman yang sudah canggih ini. Misalnya pada materi ikatan ion dan kovalen ini bisa menggunakan aplikasi untuk dapat melakukan percobaannya. Dan hasil belajar siswa dapat dilihat menggunakan model pembelajaran  yang melibatkan siswa dan teknologi  sehingga siswa memiliki ruang untuk mencari tahu dan bereksperimen, contohnya pada model pembelaran learning cycle 9E. Penelitian ini bertujuan untuk mengetahui perbedaan sebelum dan sesudah diterapkannya model pembelajaran model  learning cycle 9E terhadap hasil belajar siswa yang pada materi ikatan ion dan ikatan kovalaen. Jenis penelitian ini adalah kuantitatif dengan desain penelitian adalah  quasi eksperimen dengan desain nonequivalen control group design. Di dalam desain ini, penelitian menggunakan kelas eksperimen dan kelas kontrol dengan diawali sebuah tes awal sebelum pembelajaran untuk kedua kelas kemudian di berikan treatment atau perlakuan. Penelitian kemudian diakhiri dengan test akhir pada kedua kelas. Kelas eksperimen adalah kelas yang mendapat perlakuan model pembelajaran Learning Cycle 9E sedangkan kelas kontrol adalah kelas yang tidak mendapat perlakuan model pembelajaran Learning Cycle 9E. Sampel yang digunakan dalam penelitian terdiri atas 30 siswa kelas X di SMAN Pandeglang 1. Penelitian ini terdiri dari beberapa jenis pengukur berupa modul ajar, LKPD, dan soal posttest dan pretest. Data penelitian yang didapat diolah secara deskriptif statistik menggunakan Microsoft Excel dan analisis inferensial seperti uji validitas, realibilitas, normalitas, dan paired sample t-test untuk menguji hipotesis menggunakan aplikasi SPSS 26.0.
Tailoring Bandgap and Crystallinity of TiO₂ via Mg Doping for Enhanced DSSC Photoanode Performance Mursal, Mursal; Malahayati, Malahayati; Ismail, Ismail; Irhamni, Irhamni; Jalil, Zulkarnain
Bulletin of Chemical Reaction Engineering & Catalysis 2025: Just Accepted Manuscript and Article In Press 2025
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20473

Abstract

The structural and optical properties of magnesium-doped titanium dioxide (Mg–TiO₂) nanocrystalline films were investigated for potential application as photoanodes in dye-sensitized solar cells (DSSCs). The films were synthesized via a sol-gel method using titanium(IV) isopropoxide and magnesium acetate as precursors. Mg doping concentrations ranging from 0 to 4 mol% were explored. The films were deposited onto glass substrates using the doctor blade technique and annealed at various temperatures. Characterization was carried out using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier-transform infrared spectroscopy (FTIR), and UV–Vis spectroscopy. XRD analysis confirmed the formation of TiO₂, MgO, and MgTiO₃ phases, with a notable decrease in crystallite size as Mg content increased. The smallest crystallite size of 12.71 nm was obtained at 4 mol% Mg doping. SEM images revealed improved surface morphology and more uniform porosity in doped films. FTIR spectra indicated no significant changes in chemical bonding, while UV–Vis analysis showed a decrease in bandgap energy from 3.8 eV to 3.4 eV with Mg doping. These modifications suggest enhanced dye adsorption and reduced charge recombination, indicating the potential of Mg-doped TiO₂ films to improve DSSC performance.