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All Journal Tengkawang : Jurnal Ilmu Kehutanan PERENNIAL Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Hanifah, Nisrina Putri
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Nursing Public Health Social Sciences

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Journal : perennial

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Daya Tahan Hidup Fragmen Koloni Rayap Tanah Coptotermes curvignathus Holmgren (Isoptera: Rhinotermitidae) dalam Pemeliharaan di Laboratorium Kutana, Agung Nugrawan; Nandika, Dodi; Arinana; Hanifah, Nisrina Putri; Wahyuningtias, Irma
PERENNIAL Vol 20 No 2 (2024): Vol. 20 No. 2, Oktober 2024
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v20i2.36785

Abstract

Information about colony fragments survival of the termite species Coptotermes curvignathus Holmgren in the laboratory is very limited. This study was conducted to determine colony fragments survival of the subterranean termite C. curvignathus Holmgren in laboratory maintenance. The test media used the Termitarium PSIH-IPB: 1999 as a glass vessel containing 4 kg of a mixture of sand and clay with 4 proportions and 4 different pH determined as treatments that would be studied for their effects on termite survival. The results showed that the proportion of the sand:clay mixture affected the survival and feeding preferences of the subterranean termite C. curvignathus Holmgren. The highest percentage of termites that survived was found in the termitarium containing a mixture of sand:clay 50:50. The highest percentage of bait wood weight loss occurred in the test media containing a mixture of sand: clay 50:50. The weight loss of bait wood is directly proportional to the termites survival.
Keterbasahan Kayu Jati Cepat Tumbuh Termodifikasi Kimia dan Panas: Wettability of Chemically and Thermally Modified of Fast-Growing Teak Wood Hanifah, Nisrina Putri; Wahyuningtyas, Irma; Kutana, Agung Nugrawan; Dirna, Fitria Cita
PERENNIAL Vol 21 No 1 (2025): Vol. 21 No. 1, April 2025
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v21i1.43479

Abstract

Fast-growing species are chemically and thermally modified to improve quality. These changes affect wood’s chemical composition and surface characteristics. This study aims to analyze the durability of fast-growing teak wood that has been chemically and thermally modified. Chemical modification was carried out by impregnation using citric acid and polyethylene glycol (PEG) 400, while heat modification carried out at 150 °C. The wettability of wood was tested by measuring the contact angle with six types of liquid, aquades, toluene, glycerin, methanol, alkyd, and acrylic paint. The results showed that chemical modification treatment significantly improved the wettability of wood compared to control and heat treatment. Wood treated with citric acid and PEG 400 exhibits a lower contact angle, indicating increased liquid absorbency. Conversely, heat treatment increased the contact angle value making the wood more hydrophobic. Alkyd showed better wettability than acrylic paints, possibly due to their lower viscosity values. This suggests that chemical modification more effectively improves wood coating adhesion.
Co-Authors Arinana Arinana Denny, Shalehudin Denny Maruf Dodi Nandika Fitria Cita Dirna Hertianti, Erina Intan, Anderia JOKO PRAYITNO Kutana, Agung Nugrawan Muhammad Fikri Hernandi Riki Andika Salusu, Heriad Daud Sari, Nur Maulida Wahyuningtias, Irma Wahyuningtyas, Irma Wartomo, Wartomo Yusuf, Andi