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All Journal Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Pendidik Indonesia
Azra, Azmi
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences

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Rancang bangun lift sederhana berbasis STEM (science technology, engineering, and mathematics) pada konsep hukum newton Andriani, Sinta; Sohibun; Azra, Azmi
Jurnal Pendidik Indonesia Vol. 3 No. 1 (2022): Jurnal Pendidik Indonesia
Publisher : Karoteh Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61291/jpi.v3i1.11a

Abstract

The purpose of researching these was to design a simple elevator learning media based on Science, Technology, Engineering, and Mathematics (STEM) and test the feasibility of the learning media to explain Newton’s legal concept. This research was manipulation research. The design of this device consists of three main components: acrylic, dynamos and Arduino Uno. Validation of the feasibility of the tool is reviewed from the aspect of material experts, media experts and tool feasibility. Two lecturers and one teacher tested the teaching aids. The data analysis technique in this research was the descriptive analysis technique. Based on the result of the expert questionnaire calculation, the average of 89,19% with very good criteria. So it can be concluded that simple Science, Technology, Engineering, and Mathematics (STEM) based elevator learning media are very worthy of being used as a physical model to explain newton’s legal concepts.
Utilization of Dry Cocoa Pod Husks as an Antioxidant-Rich Herbal Drink Fitri, Ernarisa; Effendi, Effendi; Azra, Azmi
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 22 No. 2 (2021): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.871 KB) | DOI: 10.24036/eksakta/vol22-iss2/262

Abstract

Cocoa (Theobroma cacao L) production in Indonesian has increased every year, therefore more cocoa pod husks are produced. Currently, the use of cocoa pod husks is still very limited, even most farmers only dump the pods and turn them into plantation waste which will later become new problems in the plantation environment, such as causing bad smell and spreading diseases to healthy cocoa. Even if there is use of cocoa pods, at this point it is only used for animal feed and compost. In fact, cacao pod husks contain flavonoids and phenolic compounds which have high levels of antioxidant activity which are very beneficial fot the health. Based on the results of the sample analysis test using the FTIR and XRF instrument, there are functional groups that contain antioxidants and based on the XRF test, the pods of cocoa also contain several minerals, including 60,69% potassium and 24,56 calcium. Antioxidants can prevent the activity of free radicals which are the main causes of degenerative diseases. Therefore, cacao pod husks are very useful for making herbal drinks by drying and pounding them into a homogeneous powder product.
Co-Authors Andriani, Sinta Effendi Effendi Fitri, Ernarisa Sohibun -, Sohibun