Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Pembelajaran Fisika
Hikma Yanti
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Environmental Science Physics Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Sifat Dasar Tanaman Mengkuang (Pandanus artocarpus Griff) Basic Properties of Mengkuang Plant (Pandanus artocarpus Griff) Hikma Yanti; Wasrin Syafii; Nyoman J Wistara; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1960.759 KB) | DOI: 10.51850/jitkt.v16i1.437

Abstract

The aim of this research were to determine the  extractive,  α-cellulose, hemicellulose, lignin, and sugar composition of hemicelluose for raw materials and pulp of mengkuang (Pandanus artocarpus Griff) leave and stem. Delignification was carried out by alkaline process with NaOH 20% and 25% at 170 oC for 4 h. The chemical and physical analyses were done using Fourier Transform Infrared Spectroscopy, X-Ray Diffraction, High Performance Liquid Chromatography, and Scanning Electron Microscopy. The leaves and stem of mengkuang  containing extracts of 6.99% and 4.80%, cellulose 35.02% and 40.29%, hemicellulose 33.12% and 31.19%, lignin 29.10% and 26.84%, respectively. The syringyl, guaiacyl, and p-hydroxyphenil composition  in mengkuang leaves and steam  were 40.00%, 41.82%, 19.24% and  39.81%, 41.82%, 18.37%. The hemicellulose in the leaves and stem consisted of glucose, arabinose, xylose, mannose, rhamnose, and galactose. The highest pulp yield (41.71%) was obtained from pretreatment of 20% NaOH in the stem. Pulp of leaves and stem contained α cellulose, hemicellulose, and total lignin content of 88.19%, 7.95%, 14.36%, and 88.27%, 10.17%, 13.83%. The highest crystallinity of pulp (70.00%) was obtained from the stem at a concentration of 25% NaOH, and the lowest (58.18%) was obtained from the leaves at a concentration of 25% NaOH. 
PENGEMBANGAN MULTIMEDIA INTERAKTIF DISERTAI DRILLS PADA POKOK BAHASAN TEKANAN DI SMP Hikma Yanti; Sri Wahyuni; Maryani Maryani; Pramudya Dwi Aristya Putra
JURNAL PEMBELAJARAN FISIKA Vol 6 No 4 (2017)
Publisher : FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jpf.v6i4.6224

Abstract

This research aimed to describe validation and effectiveness of interactivemultimedia and students’ response after the learning process was using interactivemultimedia accompanied drills on the subjects of pressure. This research includedresearch development to produce a product of media learning namely interactivemultimedia accompanied drills on the subjects of pressure in junior high schoolstudents. The development model used the Four-D (Define, Design, Develop, andDisseminate) model. The result of this research showed that assessments validator tointeractive multimedia was perfectly valid with the acquisition the percentage was88,65 %. In the developmental testing known that interactive multimedia was veryeffective used to improve students’ learning outcomes with the acquisition N-gain testwas 0,715 with was in the high category. In addition, the students’ response toward theinteractive multimedia had a positive and good response with the acquisition thepercentage of 87,95 %.Key word: interactive multimedia, drills, effectiveness, students’ response.
Co-Authors Fauzi Febrianto I Nyoman Jaya Wistara Maryani Maryani Pramudya Dwi Aristya Putra Sri Wahyuni Wasrin Syafii