1. Analysis of the needs of science, technology, engineering and mathematics (STEM) learning instruments on the derivative topic. (February 2020) Authors: Husna, R; Johar, R; Usman, Journal: Journal of physics Issue: Volume 1460(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Extraction of tannin from garlic skins by using microwave with ethanol as solvent. Issue 1 (May 2020) Authors: Pardede, C.; Iriany, ; Tambun, R; Fitri, M D; Husna, R Journal: IOP conference series Issue: Volume 801:Issue 1(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. The use of soxhletation method and microwave-assisted extraction in extracting tannin from jengkol peel (Pithecellobium jiringa). Issue 1 (March 2021) Authors: Tambun, R; Husna, R; Fitri, M D; Ginting, Y; Alexander, V Journal: IOP conference series Issue: Volume 1112:Issue 1(2021) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗