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All Journal Tropical Animal Science Journal KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia JURNAL PENDIDIKAN DAN ILMU FISIKA Edu Research : Jurnal Penelitian Pendidikan
Seprianto
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Agriculture, Biological Sciences & Forestry Humanities Chemistry Education Energy Physics Other

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Profil Kompetensi Proses Sains Siswa SMAN Se-Kota Padang dari Tes PISA Menurut Benchmark Nasional dan Internasional Seprianto; Ratih Permana Sari; Harry Firman; Nahadi
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 1 No 2 (2018): KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia
Publisher : Universitas Samudra

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Abstract

Penelitian ini bertujuan untuk memperoleh profil literasi sains siswa khususnya pada kemampuan proses sains. Penelitian ini adalah penelitian deskriptif menggunakan metode survei. Penyampelan menggunakan teknik stratified cluster random sampling. Survei dilakukan terhadap 230 orang siswa kelas X dari tiga SMA Negeri di kota Padang yang mewakili tiga klaster. Gambaran tentang kemampuan proses sains siswa menggunakan hasil tes PISA. Profil kompetensi proses sains dinyatakan dalam proportion correct dan dibandingkan terhadap benchmark nasional dan internasional. Hasil penelitian menunjukkan kemampuan proses sains siswa masih rendah, ditunjukkan oleh proportion correct < 0,5. Pada semua proses sains, capaian siswa lebih rendah dibandingkan benchmark internasional. Namun, capaian siswa lebih tinggi dibandingkan benchmark nasional pada dua dari tiga proses sains yaitu menjelaskan fenomena secara ilmiah dan menggunakan bukti ilmiah.
ANALISIS KETERAMPILAN BERPIKIR KRITIS DALAM PEMBELAJARAN IPA SISWA SEKOLAH MENENGAH PERTAMA DI KOTA SUNGAI PENUH Revi Gina Gunawan; Festiyed; Rahadian Zainul; Lufri; Skunda Diliarosta; Rilla Gina Gunawan; Riko Romas Prayuda; Seprianto
EDU RESEARCH Vol 5 No 3 (2024): EDU RESEARCH
Publisher : IICLS (Indonesian Institute for Corporate Learning and Studies)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47827/jer.v5i3.562

Abstract

In the current educational landscape, critical thinking is an essential skill that significantly aids students in addressing problems effectively. This skill encompasses various aspects such as interpretation, analysis, evaluation, inference, explanation, and self-regulation. The aim of this study is to evaluate the critical thinking abilities of seventh-grade students in Sungai Penuh City, with a specific focus on SMPN 8 and SMPN 11. A total of 60 students from both schools participated in this study, which centered around science education (IPA). A descriptive quantitative method was used, with data collected through essay-based assessments designed around critical thinking indicators. The research results revealed that students from SMPN 8 demonstrated superior critical thinking skills compared to their peers at SMPN 11, with an average achievement score of 46.07% (moderate category) at SMPN 8 and 28.13% (low category) at SMPN 11. The main weaknesses identified were in the areas of analysis and inference, particularly at SMPN 11, where most indicators were classified as low. These findings underscore the challenges present in the learning process, including teaching methods, student motivation, and the learning environment. Therefore, more effective teaching strategies are needed to enhance students' critical thinking abilities, particularly in science education.
Optimization of Phytase Production from Rhodotorula mucilaginosa RG-PK20 Using Agricultural Waste Seprianto; Utama, C. C. Y.; Melani, V.; Handayani, P.; Sukarman
Tropical Animal Science Journal Vol. 48 No. 4 (2025): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2025.48.4.328

Abstract

Some ingredients in poultry feed contain phytic acid, which prevents the absorption of nutrients. Microbial phytase enzymes can help with this problem. However, the phytase-producing gene of the novel yeast Rhodotorula mucilaginosa RG-PK20 has been constrained by the high cost of traditional substrates such as sodium phytate. The aim of this study is to evaluate the production of phytase from R. mucilaginosa RG-PK20 using a phytic acid source (substrate) from agricultural waste, with in vitro testing in poultry feed. The fermentation process was conducted utilizing a substrate-to-medium-to-yeast culture ratio of 1:1:1 v/v/w over a period of four days at various temperatures (25, 28, and 30 °C) and pH levels (3, 4, 5, and 6, with 7 as a control). Glucose and urea supplements were given when the optimal conditions were established by measuring the phytase content and activity. The molecular weight of the phytase was confirmed by SDS-PAGE analysis, and the ability of the enzyme to hydrolyze phytic acid was evaluated in vitro. Corn cobs generated the highest amount of phytase, with a concentration of 25.29 mg/mL and activity of 4.46 U/mL. The in vitro tests revealed an 81% reduction in phytic acid levels in poultry feed. These results demonstrate the potential of phytase derived from R. mucilaginosa RG-PK20 to reduce phytic acid in poultry feed ingredients.
Eksplorasi Kesulitan Pembelajaran Fisika Matematika: Studi Kasus Mahasiswa Tadris Fisika IAIN Kerinci Darwata, Siti Riva; Seprianto; Adelia, Ismi
Jurnal Pendidikan dan Ilmu Fisika Vol 5 No 2 (2025): Desember 2025
Publisher : Universitas Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52434/jpif.v5i2.43246

Abstract

This research aims to identify and understand the difficulties experienced by students in learning Mathematical Physics at IAIN Kerinci. Based on the results of qualitative data analysis using a case study approach obtained from interviews, classroom observations, and group discussions, it was found that the main factors affecting students' learning difficulties are limitations in basic mathematics mastery, the complexity of physics concepts, and the limitations of interactive teaching strategies. This study recommends the development of more interactive teaching methods, the enhancement of laboratory facilities, and the formulation of a curriculum that prioritizes strengthening the fundamentals of physics and mathematics. The results of this research are also expected to serve as a reference in improving the quality of more adaptive and applicative Mathematical Physics learning according to the academic needs of students.
Co-Authors Adelia, Ismi Darwata, Siti Riva Festiyed Handayani, P. Harry Firman Lufri Lufri Melani, V. Nahadi Rahadian Zainul Ratih Permana Sari Revi Gina Gunawan Riko Romas Prayuda Rilla Gina Gunawan Skunda Diliarosta Sukarman Utama, C. C. Y.