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All Journal Journal of Natural Sciences and Mathematics Research Physics Education Research Journal
Arik Pujiyanti
Universitas Negeri Semarang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Materials Science & Nanotechnology Physics

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Quality of Biocompost Resulting from Biopore Holes Based on Light Intensity and Acidity Degree (pH) Arik Pujiyanti; Sulhadi Sulhadi; Mahardika Prasetya Aji
Journal of Natural Sciences and Mathematics Research Vol 5, No 2 (2019): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1060.114 KB) | DOI: 10.21580/jnsmr.2019.5.2.11038

Abstract

The use of chemical fertilizers that are not balanced with the provision of organic fertilizers can damage the soil. Chemical fertilizers can also damage the balance of nutrients in the soil and lower soil pH. Therefore, organic fertilizers are needed to help restore soil fertility and LRB as a medium for composting organic fertilizers. The biopore infiltration hole (LRB) is "activated" by providing organic waste. This waste will be used as a source of energy for soil organisms to carry out their activities through the decomposition process. This decomposed waste is known as compost. Compost is a term for man-made organic fertilizer made from the decomposition process of the remains of living things (plants or animals). The investigation of this study was to determine the quality of compost based on light intensity and acidity (pH) from the results of biopore infiltration holes (LRB) as well as good physical properties of compost. This type of research is an experimental research. Good quality compost has low resistance. The pH value of the compost in samples A,B,D,E is 6.5-7.5 so it is neutral, while the pH of the compost sample C is 8.5 is alkaline. The intensity of the light is high. The results of the lowest light intensity in the compost from this study were leaf compost + sawdust + EM4 of 990 lux, fermented in LRB for 2 weeks. Meanwhile, the highest light intensity value was found in the compost of raw material leaves which were fermented for 1 month at 1017 lux. So the greater the value of light intensity in the compost, the better quality it has, because it can improve soil fertility. ©2019 JNSMR UIN Walisongo. All rights reserved.
Penerapan Model Problem Based Learning (PBL) Berbantuan Alat Peraga untuk Meningkatkan Minat dan Hasil Belajar Fisika Siswa MA Arik Pujiyanti; Ellianawati Ellianawati; Wahyu Hardyanto
Physics Education Research Journal Vol 3, No 1 (2021)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/perj.2021.3.1.6666

Abstract

The implementation of the 2013 curriculum led to several innovations in the learning process including using the Problem Based Learning (PBL) model. This study aims to determine the interests and learning outcomes of students after being treated with the PBL model assisted by teaching aids. This type of research is a pre-experimental study with a one-shot case study design. The research sample consisted of 14 students of MA Uswatun Hasanah Semarang. The data collection technique used a written test instrument and a student interest questionnaire. The results of this study indicate that the learning outcomes of students analyzed by the N-gain test have increased with an N-gain coefficient of 0.21 which is included in the low criteria. The percentage of students' interest in learning obtained an average result of 81.786% so that it is categorized as very good. The results also showed that the use of the PBL model resulted in 85% completeness of the learning outcomes of the Circular Motion material so it could be concluded that the PBL model assisted by teaching aids had an influence on the learning outcomes of students.
Co-Authors Ellianawati, Ellianawati Mahardika Prasetya Aji S Sulhadi Wahyu Hardyanto