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All Journal Tengkawang : Jurnal Ilmu Kehutanan Jurnal Penelitian Hutan Tanaman Jurnal Penelitian Kehutanan FALOAK Jurnal Pengabdian Magister Pendidikan IPA PERENNIAL Jurnal Aplikasi dan Inovasi Iptek (JASINTEK) Agrimansion: Agribusiness Management & Extension Agroteksos Jurnal Multidisiplin Madani (MUDIMA) Jurnal Pepadu Jurnal Rimba Lestari
Lestari, Andi Tri
Universitas Mataram
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Social Sciences Other

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Journal : PERENNIAL

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SIFAT KETERBASAHAN PADA BIDANG TANGENSIAL DAN RADIAL KAYU RAJUMAS Andi Tri Lestari
PERENNIAL Vol. 16 No. 1 (2020)
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v16i1.7638

Abstract

Rajumas merupakan tanaman lokal yang menjadi komoditi endemik di Nusa Tenggara Barat yang jarang dimanfaatkan (lesser-used wood species) karena kekuatan dan keawetannya rendah Kualitas kayu rajumas dapat ditingkatkat dengan mengaplikasikan bahan pengawet maupun bahan pelapis pada kayu tersebut. Faktor utama yang mempengaruhi keberhasilan aplikasi bahan pengawet maupun bahan pelapis pada kayu adalah keterbasahan kayu itu sendiri. Penelitian ini dilakukan untuk menguji keterbasahan kayu rajumas pada masing-masing 3 papan radial dan 3 papan tangensial kayu rajumas. Masing-masing contoh uji diuji keterbasahannya pada 5 titik yang berbeda dengan metode sessile drop. Hasil pengukuran menunjukkan bahwa penampang tangensial memiliki keterbasahan yang lebih tinggi dibandingkan dengan penampang radial. Rerata K-value yang dihasilkan pada penampang radial masing-masing adalah 0.15, 0.15 dan 0.16 sedangkan rerata K-value yang dihasilkan pada penampang tangensial masing-masing adalah 0.36, 0.32 dan 0.30. Meski demikian hasil tersebut mengindikasikan bahwa tidak ada perbedaan yang signifikan antar pola penampang kayu pada kayu rajumas. Rerata K-value dari semua kayu yang diuji lebih besar dari 0 yang mengindikasikan bahwa cairan dapat menyebar dan menembus permukaan kayu yang diuji.
SIFAT FISIKA BAMBU GALAH (Gigantochloa atter) BERDASARKAN ARAH AKSIAL DI KECAMATAN GUNUNG SARI KABUPATEN LOMBOK BARAT: Effects of Axial Directions to the Physical Properties of Galah Bamboo(Gigantochloa atter) in Gunung Sari Region, Western Lombok Regent Andi Tri Lestari; Febriana Tri Wulandari
PERENNIAL Vol. 16 No. 2 (2020): Vol. 16 No. 2, Oktober 2020
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v16i2.9526

Abstract

Lombok island is one of the islands in Indonesia which is rich in bamboo varieties and one of them is galah (Gigantochloa atter). This species is generally used for crafting and furniture by people of the Gunung Sari area, Western Lombok Regent. The study of the physical properties of this bamboo was important because they were correlated to bamboo quality especially for cutting, defects, boring, shaping, stripping, and sanding. The objective of this study was to understand the influence of axial directions (bottom, middle, and top portions) on physical properties and their values which were investigated with the experimental method. The experimental design was completed randomized design (CRD) employing axial directions as the parameters with three replications. The statistical analyses were Anova with range tests at α = 5%, and Least Significant Difference (LSD) tests at α = 5%. The results showed that the treatments of physical properties (axial directions at the bottom, middle, and top portions) of galah bamboo were not significantly different. The average fresh moisture content was 176.21%, air-dried moisture content 14.43%; fresh density 0.40; air-dried density 0.54; oven-dried density 0.51.Keywords: axial directions; density; galah bamboo; moisture content; physical properties
Pengaruh Viskositas Cat Terhadap Daya Lekat Bahan Pelapis Akhir pada Kayu Rajumas (Duabanga moluccana Blume): The Effect of Paint Viscosity on The Adhesion of Top Coating on Rajumas Wood (Duabanga moluccana Blume) Liza Umitasari; Anwar, Hairil; Lestari, Andi Tri
PERENNIAL Vol 19 No 2 (2023): Vol. 19 No. 2, Oktober 2023
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v19i2.30516

Abstract

This research aims to analyze the effect of paint viscosity on the adhesion of the final coating material to the radial and tangential sections of Rajumas wood. The research samples were smoothed using sandpaper and coated with water-based paint. Variations in paint viscosity are obtained by dilution using 10%, 20% and 30% of 1L of water. The viscosity of the paint solution obtained by dilution of 10%, 20% and 30% was 2.32 poise, 2.41 poise and 2.44 poise, respectively. Paint adhesion testing uses the Cross Cut Test method which refers to ASTM D 3359-09. The results of the research show that variations in paint viscosity have a significant effect on the adhesion of the final coating material to the radial and tangential cross-sections of Rajumas wood. A viscosity of 2.32 poise produces the best paint adhesion compared to a viscosity of 2.41 poise and 2.44 poise and the difference in cross-section (radial and tangential) does not show a significant difference in the adhesion value of the final coating material to Rajumas wood.
Pengaruh Viskositas Cat Terhadap Sifat Keterbasahan Kayu Rajumas (Duabanga moluccana Blume): The Effect of Paint Viscosity on The Wettabillity of Rajumas Wood (Duabanga moluccana Blume) Maulia, Zsarytha; Anwar, Hairil; Lestari, Andi Tri
PERENNIAL Vol 19 No 2 (2023): Vol. 19 No. 2, Oktober 2023
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v19i2.31323

Abstract

Rajumas wood is one of the local wood forest products from West Nusa Tenggara and has low strength and durability. Finishing treatment is needed for the service life of wood. One of the indicators of finishing quality is the ability of paint liquid wetting on the wood surface (wettability). This research aims to analyze the effect of paint viscosity on the wettability of rajumas wood. The samples used were radial and tangential sections in air-dry condition, and the wood surfaces were sanded with abrasive paper of 150 grit. The value of viscosities was 2.44, 2.41, and 2.32 poise from each percentage of paint and water ratio of 90%:10%, 80%:20%, and 70%:30%. Wettability was determined based on the rate of change equilibrium contact angle using the S/G equation. The research results show that the low viscosity value of Aqua Politur produces the lowest equilibrium value and highest wettability value (K-Value) in both radial and tangential sections. A high K-value indicates that Aqua Politur's ability to wet the wood surface is better, as shown by the paint percentage ratio of 70%:30%.
Pemetaan dan Analisis Pengelolaan Sampah di Kawasan Ekonomi Khusus (KEK) Mandalika, NTB: Mapping and Waste Management Analysis in The Special Economic Zone (SEZ) Mandalika, NTB lestari, andi tri; Anwar, Hairil; Syaputra, Maiser
PERENNIAL Vol 20 No 1 (2024): Vol. 20 No. 1, April 2024
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v20i1.32908

Abstract

One of the main tourist destinations in NTB Province currently is the Mandalika area, part of the Central Lombok region. This area is designated a Special Economic Zone (SEZ) based on PP Number 52 of 2014. Tourist visits increased drastically at the 2021 World Superbike (WSBK) event, and it is assumed that this will grow at the upcoming 2022 MotoGP event. An increase in the number of tourists has a positive and negative impact on the environment, along with increasing waste production. This research analyzed waste generation, composition, and effective waste management in the Mandalika SEZ. Analysis of waste production and composition will be carried out by referring to SNI 19-3964-1994 regarding methods for collecting and measuring samples of urban waste production and composition while analyzing waste management in the Mandalika SEZ, which was carried out by interview. The research results show that the average waste production in the Mandalika SEZ is 58.16 kg/Day. The most dominant waste composition is organic waste originating from food scraps, with an average of 39.56 kg/day, followed by the amount of plastic waste with an average of 16.41 kg/day. The smallest amount of waste at the research location is paper waste, with an average of 0.48 kg/day, and other waste is used diapers, with an average of 1.71 kg/day. The Waste Management Model shows that the average waste produced at the research location is 58.16 kg in one day. As a result of the indicators of waste production, in just one month, the waste production reached 1744.80 kg/day if it was not handled at all. Based on the research results, waste management modeling was produced by increasing public awareness, organic waste management using the Anaerobic Digestion Method and inorganic waste management using the recycling method. This modeling shows that the method applied can reduce waste production by up to 0.15%, namely 263.10 kg/day.
Sifat Keterawetan Kayu Rajumas (Duabanga moluccana Blume) Dengan Metode Perendaman Dingin: Durability Properties of Rajumas Wood (Duabanga moluccana Blume) by Cold Soaking Methods Anggoro, Dhefa; Lestari, Andi Tri; Ningsih, Rima Vera
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.v20i2.42061

Abstract

Rajumas wood is a type of fast-growing wood that is included in durable class IV-V. The availability of local wood is abundant and is commonly used in West Nusa Tenggara (NTB) Province. This wood has a low durability class, so it needs special treatment, namely pickling. This research aims to determine the level of absorption, retention, and penetration of rajumas wood. The samples used were the core and sapwood of Rajumas wood. This research uses a cold soaking method with 1% biocide preservative with a soaking time of 12 hours, 24 hours, and 36 hours. The results showed that the TC sample (core part; soaking time 36 hours) produced the highest absorption and penetration values, 0.2035 g/cm3 and 0.3575 cm, respectively. Meanwhile, the GC sample produced the highest retention value (sapwood; soaking time 36 hours), namely 0.0090 g/cm3. These results show that the durability of rajumas wood in the heart and sapwood is relatively high at the absorption level, while the retention level tends to be low.
Pengaruh Aplikasi Finishing Yakisugi Terhadap Sifat Fisis dan Mekanis Kayu Rajumas (Duabanga moluccana): The Effect of Yakisugi Finishing Application on the Physical and Mechanical Properties of Rajumas Wood (Duabanga moluccana) Amir, Hafidzah Amani; Lestari, Andi Tri; Ningsih, Rima Vera
PERENNIAL Vol 21 No 2 (2025): Vol. 21 No. 2, October 2025
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v21i2.47509

Abstract

This study aims to examine the influence of yakisugi surface charring treatment on the physical and mechanical properties of Rajumas wood (Duabanga moluccana). The method involved surface burning for 0 (control), 20, 40, and 60 seconds using a butane gas torch. Tests were conducted on moisture content, density, shrinkage, water absorption, thickness swelling, modulus of rupture (MoR), and modulus of elasticity (MoE). Statistical analysis using one-way ANOVA followed by Tukey’s HSD test (α = 0.05) was performed to evaluate treatment effects. The results showed that burning duration affected both physical and mechanical properties of Rajumas wood. Longer burning durations improved dimensional stability by reducing moisture content, water absorption, and swelling; however, mechanical strength (MoR and MoE) tended to decrease at 60 seconds due to partial thermal degradation of cell wall polymers. Moderate exposure (20–40 seconds) provided an optimal balance between improved stability and acceptable strength retention. This study highlights the novel application of Yakisugi to a fast-growing tropical hardwood, offering a sustainable surface modification technique for enhancing durability and performance in non-structural wood applications.
Co-Authors Amir, Hafidzah Amani Andi Chairil Ichsan Anggoro, Dhefa Arniwati Azreira, Ratu Adhilla Chaerani, Nurul Diah Permatasari, Diah Dini Lestari, Dini Dwi Sukma Rini Eliyati, Sukra Endah Wahyuningsih Eni Hidayati Fauzan Fahrussiam Febriana Tri Wulandari Hairil Anwar Hairil Anwar Hakim, Muhamad Shaufil Huda, Laelatul Ilham Muziburrahman Juansyah, Raj’i Waldi Khaerullah, Nurman Liza Umitasari M Husni Idris Markum Maulia, Zsarytha MRT Mudhofir Niechi Valentino Novesa, Ayu Hikmatullaela Nuraeni Nuraeni Pande Komang Suparyan Pande Komang Suparyana Pandya, Lalu Wahyu Ardis Polanunu, Mochamad Boyke Putra Prasetyo, Andrie Ridzki Putri Putri, Arin Rizki Rima Vera Ningsih Rizki, Citra Aulia Setiawan, Budhy Setiawan, Budhy Sitti Latifah Syahputra, Maiser Tedi Zulia Putra Widiawati, Baiq Wulandari, Febriana Tri Ziad, Muhammad Thoriq