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All Journal Indonesian Journal of Biotechnology Jurnal Riset Akuakultur Journal on Education Jurnal Eduscience (JES) Arwana: Jurnal Ilmiah Program Studi Perairan Munggai: Jurnal Ilmu Perikanan dan Masyarakat Pesisir Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Proceedings of Malikussaleh International Conference on Multidisciplinary Studies (MICoMS)
Muliani Muliani
Akuakultul Universitas Malikussaleh
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences Other

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Pengembangan LKPD Berbasis STEM (Science, Technology, Engineering, Mathematics) pada Materi Termodinamika Dea Oktaviany; Nanda Novita; Desy Sary Ayunda; Muliani Muliani; Deasy Siska
Journal on Education Vol 7 No 1 (2024): Journal on Education: Volume 7 Nomor 1 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v7i1.6953

Abstract

This research aims to determine the feasibility and practicality of STEM-based LKPD learning media products on thermodynamics material as a medium that makes it easier for students to study thermodynamics material. The instrument used in the research is a feasibility and practicality questionnaire which will be given by material and media experts and given to teachers in the field of physics and students in class XI IPA 2 MAS Syamsuddhuha. This development research method refers to Research and Development (R&D) with the ADDIE model (Analysis, Design, Development, Implementation and Evaluation). The research results showed that experts in the media field gave a feasibility assessment of 92.3% with a very feasible category, experts in the material field gave an assessment of 88.6% with a feasible category and teacher responses gave an assessment of 86% with a very practical percentage. The results of small-scale product trials gave an assessment of 86.9% in the very practical category and the results of large-scale product trials gave an assessment of 84% in the very practical category.
Comparison of Growth Performance of Nannochloropsis oculata Biofilm at Different Layers of Substrate Plastic Rachmawati Rusydi; Muliani Muliani; Angga Dian Pratama Matondang
Proceedings of Malikussaleh International Conference on Multidisciplinary Studies (MICoMS) Vol. 4 (2024): Proceedings of Malikussaleh International Conference on Multidisciplinary Studies (MI
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/micoms.v4i.955

Abstract

Biofilm based microalga is a structured community of microalgae attaching to substrate with a self-produced matrix of extracellular polymeric substances (EPS). One of microalgae that is potential to be improved as biofilm is Nannochloropsis oculata. Biofilm of Nannochloropsis oculata has some beneficial roles such as bioremediator of polluted waters. This study was aimed to evaluate the growth performance of Nannochloropsis oculata at different layers of substrate plastic as biofilm substrate. The experimental design used was Completely Randomized Design (CRD) with four level treatments and three replications. Several treatments tested were A: Control (without layer), B: 1 Layer of substrate, C: 2 Layers of substrate, D: 3 Layers of substrate. Several procedures were conducted in this study which were preparation of KW21 medium, cultivation of biofilm at different treatments in KW21 medium, and growth measurement. The results of this study showed that different number of substrate layers could affect the specific growth rate of free cells of Nannochloropsis oculata. The highest growth rate was found in treatment B (1 substrate layer) and the lowest one was in treatment D with their values 0.064 µ/day and 0,037 µ/day. The peak population of Nannochloropsis oculata was obtained at day 14 until 15.
Co-Authors Amri Amri Angelia Angelia Angga Dian Pratama Matondang Arief Rahman Ayu Andira Ayu Gustina Dea Oktaviany Deasy Siska Desy Sary Ayunda Dian Laili Dira Fajria Dwi Anjli Erlangga Erlangga Eva Ayuzar Eva Ayuzar Eva Ayuzar Eva Ayuzar Fadieny, Nurul Hayatun Muna Helmi Yanti I Iswadi Isra Ambia Izwar, Akmal Mahdaliana, Mahdaliana Mauliyani Mauliyani Miftahul Jannah Muhammad Hatta Muhammad Syafii Munawar Khalil Munawwar Khalil, Munawwar Munzir Absa Murniati Murniati Nanda Novita Nurul Suhaila Prama Hartami Prama Hartami Putri Masyithah Rachmawati Rusydi Rachmawati Rusydi Rachmawati Rusydi Rachmawati Rusydi Rachmawati Rusydi Rifqi Bulan Riri Ezraneti Riri Ezraneti Riza Andriani Rizky Kurniawan Saifuddin Yunus Saiful Adhar Salamah Salamah Sapna Biby Siska Rahayu Susi Pramita Syafrizal Idris Syarifah Rita Zahara Vivi Julianti Widya Widya Yuli Asbar Zulpikar Zulpikar Zulpikar Zulpikar Zumairi Zumairi Zuriani, Zuriani