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Digital-Based Photoelectric Effect Practicum Toolkit: Curriculum and Student Analysis Dewi Hikmah Marisda; Ana Dhiqfaini Sultan; Syamsuriana Basri; Irma Sakti Tahir; Nurjannah Nurjannah
Jurnal Penelitian Pendidikan IPA Vol 9 No 11 (2023): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i11.5014

Abstract

Physics education study programs at several private universities in South Sulawesi are still limited in implementing Modern Physics practicum. The implementation of Modern Physics practicum at College A is limited to three practicum units, while College B has never held a Modern Physics practicum. This is because college B does not yet have a modern physics laboratory and practicum unit. Therefore, researchers developed modern physics practical tools. The Modern Physics practicum device is designed using Arduino Uno which is equipped with a digital practicum module. The aim of this research is to describe the stages of definition in aspects of curriculum analysis, beginning and end, and student needs. This research is research and development using the 4D-Thiagarajan model. Research data was analyzed descriptively. The results of the research show that one of the important Modern Physics practicum contents according to course achievements is the Photoelectric Effect. It is hoped that the development of the Photoelectric Effects practicum equipment can become a learning medium for students and a precursor to the development of other Modern Physics practicum units at the two universities
Dose-dependent muscle relaxant activity of avocado leaf (Persea americana Mill.) extract: Central nervous system effects in mice and implications for phytopharmaceutical development Nur Ahya Alsabianti; Dian Febrianti Putri Nampe; Ririn Arianti; Ihda Durratunnafisa; Raasikhah Aadilah Satria; Resky Wahyuni; Wa Ode Kezya Azhara; Nurjannah Nurjannah; Agniatul Azizah Jufri; Andi Utari Prasetya Ningrum
Priviet Social Sciences Journal Vol. 5 No. 12 (2025): December 2025
Publisher : Privietlab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55942/pssj.v5i12.1310

Abstract

Avocado leaves (Persea americana Mill.) contain flavonoids, saponins, and phenols, which are thought to exert muscle-relaxing effects through central nervous system depressant mechanisms. This study investigated the muscle-relaxing effects of avocado leaf extract (Persea americana) in male mice. Nine male mice were divided into three groups and administered 1%, 2%, and 4% avocado leaf infusions orally. Motor activity and reflex responses were observed every 15 min until the 100th min to assess muscle relaxation effects. The results showed that the muscle-relaxation effect increased with increasing extract concentration, at 15.55%, 34.44%, and 42.22%, respectively. Flavonoids and saponins are thought to play a role in increasing GABA activity, which reduces muscle tone. Avocado leaf extract showed muscle relaxation effects that increased with dose and has the potential to be a natural muscle relaxant through GABA activation.