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All Journal Jurnal Pembelajaran dan Biologi Nukleus Jurnal Analisis Pendidikan Sosial
Rini, Heni Sulistyo
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media

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Screening For Lipolytic Bacteria from Bonoloyo Cemetery, Surakarta Rini, Heni Sulistyo; Tyastuti, Erma Musbita; Siddiq, Yasir; Rahayu, Triastuti
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2023
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v9i3.4944

Abstract

A cemetery is a burial place managed by the government. Inside the TPU, the body is decomposed by microorganisms, one of which is lipolytic bacteria, because the human body is composed of about 12.5–13.60% lipids. Research on lipolytic bacteria from TPU in Indonesia has not been found, even though it has the potential to obtain lipolytic bodies. Therefore, this research was conducted to select lipolytic bacteria from TPU and provide simple assistance. A total of 45 bacterial isolates from TPU Bonoloyo Surakarta were selected for their lipolytic activity using tributyrin agar media. Lipolytic activity was determined using the lipolytic index (LI). Bacterial isolates with lipolytic potential were identified based on colony morphology and Gram staining. The results showed that 30 isolates (67%) showed lipolytic activity, with the highest LI value of 5.43 (BLB 9) after 2x24 hours of incubation. Bacterial isolates that have lipolytic activity are white colonies with circular shapes. The results of Gram staining showed that the bacterial isolates belonged to a group of Gram-negative bacteria in the form of cocci. The conclusion put forward is that public cemeteries (TPU) have the potential to store isolates of lipolytic bacteria dominated by Gram-positive bacteria by as much as 57%
PENINGKATAN HASIL BELAJAR MATEMATIKA MELALUI PENERAPAN MODEL NUMBERED HEADS TOGETHER PADA SISWA KELAS III SD NEGERI KARANGAWEN 1 TAHUN 2021/2022 Rini, Heni Sulistyo
Jurnal Analisis Pendidikan Sosial Vol 2 No 1 (2025): Jurnal Analisis Pendidikan Sosial (JAPS)
Publisher : CV Sintesia

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Abstract

This study aims to improve mathematics learning outcomes through the Numbered Heads Together learning model. The implementation of this class action is carried out in two cycles. Each cycle has one meeting. The research subjects were teachers and third grade students of SD Negeri Karangawen 1, totaling 30 students. Sources of data in this study are students and teachers. The form of this research is Classroom Action Research (CAR). The research procedure includes four stages, namely: planning, action, observation, and reflection. The results showed an increase in student learning outcomes.After using learning in the form of learning Number head together, student learning outcomes increased from the first one Judging from the pre-cycle students who completed there were 12 children or 40%, students who had not completed there were 18 children or 60%, in the first cycle there were 15 students or 50% students who had not completed, 15 students or 50% had not completed, and in the second cycle there are 30 students who have completed or 100%, there are no students who have not completed or 0%. This proves that the application of the Numbered Heads Together learning model is able to improve mathematics learning outcomes in third grade students of SD Negeri Karangawen 1, Karangawen District, Demak Regency.
Co-Authors Siddiq, Yasir Triastuti Rahayu Tyastuti, Erma Musbita