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All Journal International Journal of Science and Engineering (IJSE) Jurnal Akuatika Berkala Perikanan Terubuk Aceh Journal of Animal Science Omni-Akuatika Jurnal Biologi Tropis Jurnal Inovasi Pendidikan dan Sains Jurnal Pembangunan Perikanan dan Agribisnis Ilmu Perikanan Tropis Nusantara JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam
Iwan - Suyatna
Mulawarman University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Physics Social Sciences

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PENINGKATKAN PEMAHAMAN DAN NILAI MAHASISWA DENGAN METODE PRAKTIKUM Irwan Ramadhan Ritonga; Dewi Embong Bulan; Mohammad Sumiran Paputungan; Nurfadilah Nurfadilah; Irma Suryana; Adnan Adnan; Iwan Suyatna; Ristiana Eryati; Widya Kusumaningrum; Rani Novia; Ahmad Ahmad; Firman Firman; Andi Fitri Sakmiana
Jurnal Inovasi Pendidikan dan Sains Vol 4 No 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v4i2.1519

Abstract

Education is one indicator of a country's progress, because it has improved the quality of human resources. One of the Educational activities in the university is joint practicums to improve students' understanding of critical thinking patterns and values. The purpose of this practicum was to examine and analyze the ability of essential patterns of thinking, level of understanding of theory and method, and student learning outcomes as well in the study programme of Marine Science, Mulawarman University. Practicum activities were conducted in Malahing village, Bontang City in November 2022. A total of 52 students took part in the activities. All data in this activity were collected from initial critical thinking skills tests (pre-test) and after (post-test), score from practicum’s report, and participants' perceptual responses in the form of online questionnaires. It was found that the student's critical thinking skills in this activity were in the moderate category based on N-Gains score (0,46). In General, the percentage of understanding and student learning outcomes was in good category (71-84). Based on the student responses, about 92.3% of students were enthusiastic and happy with the practicum learning method. Thus, joint practicum activities might influence increasing student understanding and grades.
Analisis Kandungan Logam Berat Timbal (Pb) dan Tembaga (Cu) pada Anadara Granosa di Perairan Dusun Selangan Kota Bontang Fatmy Yaumil Akhir Jafar; Fitri Noerhidayanti; Fitriyana Fitriyana; Iwan Suyatna
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 4 (2025): Desember: Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i4.894

Abstract

This study examines the impact of industrial activities in Bontang City, a major center for natural gas processing and fertilizer production, which potentially increases heavy metal contamination in coastal waters. Specifically, the research focuses on the accumulation of lead (Pb) and copper (Cu) in Anadara granosa, a benthic bivalve selected as a bioindicator due to its capacity to accumulate pollutants. The study aims to analyze Pb and Cu concentrations in Anadara granosa tissues collected from the waters of Selangan Hamlet, Bontang City, as an indicator of local environmental quality. The research was conducted over a six-month period, involving shellfish and water sampling from four observation stations. Heavy metal analysis was performed using Atomic Absorption Spectrophotometry, and the results were evaluated against relevant environmental quality standards, including Government Regulation of the Republic of Indonesia Number 22 of 2021. The findings revealed the presence of Pb and Cu at all sampling stations, with varying concentrations. The highest Pb and Cu levels were recorded at the South Station, while the lowest concentrations were observed at the East and North Stations. Overall, the measured concentrations of both metals significantly exceeded established safety limits, indicating serious risks to aquatic ecosystems and human health. These results confirm Anadara granosa as an effective bioindicator of heavy metal pollution and highlight the urgent need for further studies and mitigation efforts.
Co-Authors Abdunnur Abdunnur Adnan Adnan Adnan Adnan Ahmad Ahmad Ahmad Rafii Andi Fitri Sakmiana Andy Suardysapar Destilawaty Destilawaty Dewi Embong Bulan Fatmy Yaumil Akhir Jafar Fauziah Azmi Firman Firman Fitri Noerhidayanti Fitriyana Fitriyana Ghitarina Helminuddin . Helmy Akbar Helmy Akbar Indra Ambalika Irma Suryana Irwan Ramadhan Ritonga Jailani Jailani Juliani Mislan Mislan Muhammad Syahrir R Muhammad Yaser MF Noorsheha Noorsheha Nurfadilah Nurfadilah Nurfadilah Paputungan, Mohammad Sumiran Paulus Taru Rafitah - Hasanah Rani Novia Ristiana Eryati Singgih Afifa Putra Singgih Afifa Putra Sulistyawati Sulistyawati Wedim Widya Kusumaningrum Yuni Irawati Wijaya