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All Journal The Journal of Experimental Life Sciences (JELS) Attadrib: Jurnal Pendidikan Guru Madrasah Ibtidaiyah
Pertiwi, Putri Rahayu
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Religion Humanities Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience Other

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Analysis of Microplastics in Water and Biofilm Matrices in Lahor Reservoirs, East Java, Indonesia Pertiwi, Putri Rahayu; Mahmudi, Mohammad; Pramudia, Zulkisam; Kurniawan, Andi
The Journal of Experimental Life Science Vol. 12 No. 2 (2022)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2022.012.02.03

Abstract

One of the aquatic ecosystems that are very susceptible to contamination is the reservoir ecosystem. Reservoirs have different characteristics from other water bodies because they receive continuous water input from the river that flows through them. The river water contains organic and inorganic materials that can cause pollution caused by various kinds of human activities. The pollutant that is currently getting more attention is microplastics. Hence, various ways are developed to monitor the presence of microplastics in environments. The biotic component that may adsorb and accumulate microplastics is microbes that formed biofilm matrices as a predominant habitat. This study analyzes the presence of microplastics in water and biofilm matrices in Lahor Reservoir. The water parameters (pH, dissolved oxygen, temperature, and flow velocity) were also measured. Samplings were carried out at three stations, namely station A (inlet channel), station B (middle), and station C (outlet channel). This study revealed that water quality parameters were still relatively good according to the environment's quality standards. The average value of microplastic abundance in water at station A was 0.0013 particles.mL-1, station B was 0.00083 particles.mL-1, and station C was 0.00072 particles.mL-1. The average abundance of microplastics in the biofilm at station A, station B, and station C was 7.55 particles.g-1, 7.26 particles.g-1, and 4.59 particles.gram-1, respectively. This study indicates that the abundance of microplastics in the biofilm in the Lahor Reservoir was thousands of times higher than in the water. According to the results of this study, the biofilm can be used as a biological agent in monitoring the presence of microplastics in aquatic ecosystems such as the Lahor Reservoir, East Java, Indonesia. Keywords: Aquatic Ecosystem, Biofilm, Microbial Ecology, Microplastics, Water Pollutant.
Implementasi Pembelajaran IPA Berbasis Project Terhadap Kemampuan Berpikir Kritis Siswa Kelas V Sekolah Dasar Islam Terpadu Pertiwi, Putri Rahayu; Triwoelandari, Retno; Hidayat, Muhammad Faishal
Attadrib: Jurnal Pendidikan Guru Madrasah Ibtidaiyah Vol. 8 No. 1 (2025): Islamic Primary Education based on Islamic values
Publisher : Institut Agama Islam Daruttaqwa Gresik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54069/attadrib.v8i1.879

Abstract

This study aims to analyze the effectiveness of project-based learning (PBL) in science education to enhance the critical thinking skills of fifth-grade students at SDIT Qurrata'aini Baitussalam. Using a Mixed Methods approach with a Sequential Explanatory design, the results indicate that the Project-Based Learning (PBL) model has a significant impact on the development of students' critical thinking skills. Quantitative analysis using the Independent Samples T-Test shows a significance value of 0.000 (< 0.05), indicating a substantial improvement in students' critical thinking abilities after implementing PBL. Observations and interviews with teachers reveal that students involved in projects are more engaged in discussions, able to formulate hypotheses independently, and more critical in evaluating information. Despite challenges such as limited facilities and time constraints, student enthusiasm and strong support from both the school and parents serve as the primary factors contributing to the success of this method. The findings of this study have implications for the education sector, including the need to enhance learning facilities, adjust the curriculum to allow more flexible time allocation for projects, and strengthen collaboration between schools and parents to support students' scientific exploration. With optimal PBL implementation, science education at the elementary school level can become more innovative and effective in fostering students' critical thinking skills.  
Co-Authors Andi Kurniawan Mohammad Mahmudi Muhammad Faishal Hidayat Pramudia, Zulkisam Triwoelandari, Retno