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All Journal Journal of Tropical Soils JURNAL PHARMASCIENCE PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Ilmiah Biologi UMA (JIBIOMA) BioEksakta : Jurnal Ilmiah Biologi Unsoed Journal of Banua Science Education Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Biocaster : Jurnal Kajian Biologi Jurnal Bioconcetta SERIBU SUNGAI: Journal of Research and Community Service Indonesian Journal of Forestry Research
Badruzsaufari Badruzsaufari
Department of Biology, Lambung Mangkurat University, Jl. A. Yani Km 35.8 Banjarbaru. South of Kalimantan
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Kevalidan Modul Pencemaran Lingkungan berbasis Problem-Based Learning terhadap Keterampilan Berpikir Kritis Peserta Didik SMP Rahmah, Iffah Noor; Suyidno, Suyidno; Badruzsaufari, Badruzsaufari
SERIBU SUNGAI: Jurnal Penelitian dan Pengabdian Kepada Masyarakat Vol. 3 No. 1 (2025)
Publisher : Master Program of Natural Science Education, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/seru.v3i1.365

Abstract

Penelitian ini bertujuan untuk menguji tingkat kevalidan modul pembelajaran pencemaran lingkungan berbasis problem-based learning (PBL) dalam meningkatkan keterampilan berpikir kritis peserta didik SMP. Modul dikembangkan menggunakan model 4D yang meliputi tahap define, design, develop, dan disseminate. Validitas modul dinilai oleh tiga ahli, masing-masing mencakup ahli materi, ahli media, dan ahli pembelajaran, menggunakan instrumen penilaian skala Likert 1–4. Aspek yang divalidasi meliputi kelayakan isi, penyajian, kebahasaan, karakteristik PBL, dan keterkaitan dengan indikator berpikir kritis. Hasil validasi menunjukkan bahwa modul memperoleh nilai rata-rata 3,65 dari skala 4, yang berada pada kategori sangat valid. Secara rinci, validitas materi mencapai 3,72 (sangat valid), validitas media 3,58 (sangat valid), dan validitas pembelajaran 3,66 (sangat valid). Temuan ini mengindikasikan bahwa modul memenuhi syarat kevalidan teoritis dan layak digunakan sebagai bahan ajar IPA untuk mendukung peningkatan keterampilan berpikir kritis peserta didik. Penelitian lanjutan disarankan untuk menguji kepraktisan dan efektivitas modul pada konteks kelas yang lebih luas.
Insights into Evolutionary Relationships of Proboscis Monkeys Using In Silico Mitochondrial DNA Analysis Sasmita, Rani; Badruzsaufari, Badruzsaufari; Pangestika, Intan Widya
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 2 (2026): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i2.688

Abstract

This study investigates the evolutionary position of the proboscis monkey (Nasalis larvatus) within the Colobinae subfamily using in silico phylogenetic analysis of three mitochondrial protein-coding genes (COI, COII, and COIII). Seventy sequences retrieved from GenBank were aligned and analyzed using the Maximum Likelihood method with 1,000 bootstrap replicates. All genes exhibited conserved lengths and strong AT bias (59,21-60,68%), reflecting typical mitochondrial genome characteristics shaped by asymmetric replication and purifying selection. Genetic distance analyses revealed high intraspecific consistency in Nasalis larvatus, while demonstrating marker dependent variation in phylogenetic resolution. COII and COIII provided clearer intergeneric separation compared to the more conserved COI marker. Phylogenetic reconstruction showed topological variation among markers, however, a consistent evolutionary signal emerged, with Nasalis larvatus clustering robustly with Simias concolor across all gene trees. This pattern supports the monophyly of the odd nosed monkey clade and aligns with genome scale phylogenomic evidence. Overall, this study highlights the limitations of single gene analyses and emphasizes the importance of multi marker or genome scale approaches for resolving complex evolutionary relationships. These findings provide foundational insights into the evolutionary history of Nasalis larvatus and reinforce the relevance of mitochondrial markers in primate conservation genetics.
Co-Authors Abubakar Tuhuloula Andi Ichsan Mahardika Danang Biyatmoko, Danang Dharmono Dharmono Fahmi Fahmi Fiqriani, Rizka Annida Firnanda, Muhammad Riyan Halwa, Aulia Hidayatul Mursyidin, Dindin Hidayaturrahmah Hidayaturrahmah Krismadana, Difa Pertiwi Mahdian Mahdian, Mahdian Malikhatun Ni’mah, Malikhatun Muhammad Fitri, Muhammad Mursyidin, Dindin Hidayatul Mustika Wati, Mustika Nabila, Bunga Alifia Nur Indriyani Syarifuddin, Nur Indriyani Pangestika, Intan Widya Rahmah, Iffah Noor Rubiansyah, Muhammad Saidy, Akhmad Rizali Sasmita, Rani Susilo, Tanto Budi Suyidno Suyidno Yudhi Ahmad Nazari Yusuf, Novita Anggriani