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All Journal Jurnal Ilmu Perairan (Aquatic Science) International Journal of Educational Practice and Policy
Handayani, Tri Putri
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Agriculture, Biological Sciences & Forestry Chemistry Education Environmental Science Immunology & microbiology

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Pemanfaatan Larutan Daun Ketapang (Terminalia catappa) terhadap Perbaikan Parameter Kimia Air Media Pertumbuhan Ikan Jelawat (Leptobarbus hoevenii) Handayani, Tri Putri; Hasibuan, Saberina; syafiadiman, Syafriadiman
Jurnal Ilmu Perairan (Aquatic Science) Vol. 12 No. 2 (2024): Juli
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Daun ketapang (Terminalia catappa) merupakan salah satu bahan alami yang bisa dimanfaatkan untuk menurunkan pH. Penelitian ini bertujuan untuk mengetahui pengaruh serta mendapatkan dosis terbaik larutan daun ketapang terhadap perbaikan parameter kimia air media pertumbuhan ikan jelawat. Metode yang digunakan adalah metode eksperimen dengan Rancangan Acak Lengkap (RAL) empat taraf perlakuan dan tiga kali pengulangan. P0 (kontrol), Penggunaan larutan daun ketapang dengan dosis 2 g/L (P1), P2 dosis 4 g/L, P3, dosis 6 g/L. Daun ketapang diblender hingga menghasilkan bubuk halus, selanjutnya bubuk halus ditimbang masing-masing, yaitu 20 g, 40 g, dan 60 g, kemudian dilarutkan menggunakan air panas dengan suhu 100°C sebanyak 1 L untuk masing-masing perlakuan, diaduk dan seduhan disaring. Larutan berupa cairan dimasukkan ke dalam wadah pemeliharaan dengan volume air 9 L/perlakuan. Pemberian larutan daun ketapang memberikan pengaruh nyata terhadap perbaikan parameter kimia air media pertumbuhan ikan jelawat. Perlakuan dosis terbaik adalah P2 dengan menghasilkan pertumbuhan berat mutlak sebesar 1,46 ±0,57 g, dan panjang mutlak sebesar 0,93 ±0,57 cm.
Teacher Professionalism in the Midst of Curriculum Dynamics and Educational Technology Feby, Feby Aulia; Tampubolon, Sofie Raihana Tampubolon; Handayani, Tri Putri
International Journal of Educational Practice and Policy Vol. 3 No. 1 (2025): June 2025
Publisher : Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/

Abstract

Teachers are the main actors in the education system who have an important role in educating the nation's life and shaping the character of the nation's next generation. However, the challenges of the times such as technological developments, curriculum changes, and the diversity of students require teachers to continue to develop their professionalism. This study aims to examine the characteristics of professional teachers as well as the challenges and relevant strategies in improving the quality of the teaching profession in the modern era. The method used is a literature review of various journals and scientific articles published between 2018 and 2025. The results show that professional teachers have characteristics such as commitment to the profession, ability to guide students, participation in professional organizations, and adherence to regulations. The main challenges faced by teachers include the dynamics of curriculum change, student diversity, and high administrative workload. Strategies to strengthen teacher professionalism include continuous training, strengthening reflective values and collaboration in learning communities. By understanding the nature of professionalism and the professional code of ethics, teachers are expected to carry out their roles effectively and become agents of change in the world of education.
Co-Authors Feby, Feby Aulia Saberina Hasibuan Syafriadiman, Syafriadiman Tampubolon, Sofie Raihana Tampubolon