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All Journal Jurnal Hutan Tropika
Yanarita Yanarita
Jurusan Kehutanan Fakultas Pertanian Universitas Palangka Raya
Agriculture, Biological Sciences & Forestry

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Sifat Fisika dan Mekanika Papan Partikel Berbahan Limbah Industri PT. Aldi Mandomai Mebel: Physical and Mechanical Properties of Particle Boards Are based on Industries Waste of PT. Aldi Mandomai Furniture Mahdi Santoso; Desy Natalia Koroh; Prona Rogaya Rambe; Grace Siska; Yanarita Yanarita
HUTAN TROPIKA Vol 17 No 1 (2022): Volume 17 Nomor 1 Tahun 2022
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v17i1.4465

Abstract

This research aims to determine the effect of particle sizes (10 mesh, 20 mesh, and 30 mesh) on the physical and mechanical properties of particleboards made from industry waste of PT. Aldi Mandomai Furniture, based on JIS A 5903: 2003 Standard. .  Particleboards size were 30 x30x1,5 cm, density 0,5 g/cm3. Moisture content particles at 5%, particles glued with urea-formaldehyde adhesives, weight 10%, hot press pressured with temperature  110 ± 20C for 15 minutes, pressure 25 kg/ cm2. Furthermore, particleboards must be conditioned for ± 14 days/ 2 weeks. Particleboards were cut into sample test according to the size in the JIS A 5903:2003 standard. Research design used Completely Random Design with one factor. Data analyzed using analysis of variance, if  data was significant must  to do  areal difference test. The observed to particle size with 3 levels are 10 mesh, 20 mesh, and 30 mesh.  The results of physical properties were Density ( a.v. 0,46 – 0,49 g/cm³), Moisture Content (a.v. 12,22 – 14,05%),  Water Absorption (a.v  129,79 – 167,03%), and Thickness Swelling (a.v 11,43 – 22,08%).  The results of mechanical properties were internal bonding (0,0075 - 0,0204 N/mm2), Modulus of Elasticity (a.v. 5,91 – 25,32 N/mm2), Modulus of Rupture (a.v   0,52 – 1,52 N/mm2 ), and Screw Holding (a.v.  29,42 – 104,60 N).  Particleboards made from furniture industry waste  with particle size 10 mesh was significantly to physical properties, except density and fulfill JIS A 5903:2003,  while the mechanical properties of particleboard are not fulfill the standard.
Menggali Potensi Serta Nilai Ekonomi Budidaya Lebah Kelulut (Trigona Itama) Pada Kelompok Usaha Perhutanan Sosial Di Desa Tuwung Kabupaten Pulang Pisau Kalimantan Tengah Grace Siska; Yanarita Yanarita; Meyka Yolanda; Reri Yulianti; Desy Natalia Koroh
HUTAN TROPIKA Vol 18 No 1 (2023): Volume 18 Nomor 1 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i1.9374

Abstract

The social forestry enterprise group of stingless bee farming is a group that utilizes stingless bees for cultivation and already has a product, which is honey. The community managing the social forestry land is Tuwung Village, Pulang Pisau Regency, Central Kalimantan Province. The research aims to determine the potential and economic value, as well as the factors influencing the productivity of stingless bee honey. The research method used is qualitative descriptive method. The stingless bee farming enterprise in Tuwung Village produces 40 liters of honey from 33 hives, where the potential for stingless bee cultivation is still suboptimal. The economic value, as the income from honey sales in one year, amounts to Rp 10,000,000. The honey produced during one year totals 40 liters with a selling price of Rp 250,000 per liter, resulting in the income of this enterprise group still being suboptimal or relatively low.
Kearifan Lokal Pemanfaatan Tumbuhan Berkhasiat Obat Masyarakat Desa Tahawa Yanarita Yanarita; Yusintha Tanduh; Yosefin Ari Silvianingsih
HUTAN TROPIKA Vol 18 No 1 (2023): Volume 18 Nomor 1 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i1.9397

Abstract

The local wisdom in utilizing medicinal plants by the community of Tahawa Village in the tourist area of 'Sahai Tambi Balu' in Pulang Pisau Regency needs to be preserved as a form of conservation and to enhance the community's economy. The research was conducted using observation and in-depth interviews as the methods. The data analysis was done descriptively and qualitatively. The research findings in the tourist area of 'Sahai Tambi Balu' identified a total of 19 types of medicinal plants used by the community for treating various ailments. To collect medicinal plants from their natural habitat, certain protocols and permissions are required. Firstly, the community seeks permission from the Almighty God, and secondly, they seek permission from the medicinal plants themselves, as they are believed to possess a spirit or soul. Medicinal plants can provide benefits through their roots, stems, and leaves, each with its own method of usage. The manner of usage varies depending on whether it is for external or internal treatment, depending on the specific illness. Preserving the local wisdom of the community in harvesting medicinal plants is crucial for conservation efforts to protect the existence of these medicinal plants
Co-Authors Desy Natalia Koroh Grace Siska Mahdi Santoso Meyka Yolanda Prona Rogaya Rambe Reri Yulianti Tanduh, Yusintha Yosefin Ari Silvianingsih