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All Journal Jurnal Hutan Tropika Jurnal Pengabdian Masyarakat Bidang Sosial dan Humaniora
Ahmad Mujaffar
Universitas Palangka Raya
Agriculture, Biological Sciences & Forestry Social Sciences

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Pengaruh Bagian Kayu dan Ketebalan Stiker pada Pengeringan Alami terhadap Sifat Fisika Kayu Gerunggang (Cratoxylon arborescens Bl.) Gimson Luhan; M Damiri; Herwyn Joni; Yanciluk; Ahmad Mujaffar
Jurnal Hutan Tropika Vol 14 No 1 (2019): Volume 14 Nomor 1 Tahun 2019
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (133.829 KB) | DOI: 10.36873/jht.v14i1.333

Abstract

The existence of the wood needs to be considered so that the use of wood for a particular use needs to pay attention to the quality of wood, both for wood for building materials, furniture, panels, crafts and so on. The weakness of wood compared to substitutes such as metal and concrete is its hygroscopic nature. The aim of this study was to determinethe effect of wood parts treatment on axial direction and sticker thickness on natural drying time on changes in the physical properties of gerunggang wood (Cratoxylon arborescens Bl.). While the expected benefits are as information material for the wood processing industry and wood users to be able to dry the wood properly. The research was conducted at the Forest Products Technology Laboratory for 3 months. Cutting is done by dividing the length of the stem into 3 (three) equal parts in the axial position, namely the base (a1), middle (a2) and end (a3), each cut length ± 2 m for the board (example drying test) ) with ± 2 cm thick and ± 15 cm long for example test of moisture content, specific gravity and shrinkage. The results showed that the average value of fresh water content, saturated point moisture content, and air dry water content had a tendency to decrease in value from the base to the end of the stem. The natural dryingtime has an average tendency to dry more quickly from the base to the end of the stem, with drying times ranging from 28-40 days or an average of 33 days. The end of the wood with a thickness of 3,5 cm sticker dries faster (25 days) with a defect 1 broken edge. Parts of wood with a sticker thickness of 3,5 cm dries faster than the thickness of the stickers 2,5 cm and 1,5 cm. The results of measurements of (BJ) density of gerunggang wood averaged 0,55 including the medium group (BJ 0,4-0,6). Specific gravity has a tendency to increase in value from the base to the end of the rod with an uneven pattern including type 3. The tangential and radial direction shrinkage ratio of 1,88 is included in the medium classification, then gerunggang wood can be used for boards and lightweight construction under the roof, crates, furniture, plywood andconcrete molds. It is recommended to conduct further research on the possibility of using gerunggang wood for artificial boards.Keywords: drying, wood parts, physical properties, gerunggang.
KELAS KUAT KAYU TUMIH (Combretocarpus rotundatus (Miq.) Danser) BERDASARKAN BAGIAN BATANG (The the physical and mechanical Properties of Tumih Wood Based on Section Stem) Gimson Luhan; Herwin Joni; Johansyah; Yanciluk; Ahmad Mujaffar
HUTAN TROPIKA Vol 14 No 2 (2019): Volume 14 Nomor 2 Tahun 2019
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.469 KB) | DOI: 10.36873/jht.v14i2.1150

Abstract

Tumih wood (Combretocarpus rotundatus (Miq.) Danser) is classified as an unknown type of wood which is widely grown in peat swamp forests in Central Kalimantan. This study aims to analyze the physical properties and mechanical properties of wood in axial and radial directions so that they can be utilized properly. The results of the study resulted in fresh water content and dry air content of wood air, each of which was 71,58% and 19,33%, kiln dry weight 0,72, tangential shrinkage 9,68%, radial shrinkage 5,02% and longitudinal shrinkage 0,19%. Testing of mechanical properties resulted in a flexural firmness of 618,33 kg/cm2, compressive strength parallel to the fiber 333,27kg/cm2, shear constancy 92,02 kg/cm2, hardness 355,60 kg/cm2, and stiffness at 19,50kg/cm2. Based on the Indonesian Wood Construction Regulations Standard (PKKI) NI 5-1961 tumih wood is included as a strong class III of Indonesian wood, so it is quite well used for home building raw materials, beams, floor and wall boards, door/window frames, and furniture.
Upaya Pencegahan Penyebaran Covid-19 dan Usaha Mikro dan Kecil (UMK) Kelurahan Mambulau Kabupaten Kapuas Kalimantan Tengah Aldy Juarnicko; Amalia Khairunnisa; Nadia Desyta Ramadani; Sugeng Mashabhi; Ahmad Mujaffar
ABDISOSHUM: Jurnal Pengabdian Masyarakat Bidang Sosial dan Humaniora Vol. 1 No. 3 (2022): September 2022
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/abdisoshum.v1i3.855

Abstract

Thematic Real Work Lecture (KKN-T) is a form of implementation of an independent campus. Through this KKN-T activity, it seeks to improve the competence and role of students as agents of change in society, foster a spirit of volunteerism and be able to be responsible for the community. The implementation of KKN-T for the Mambulau village group was carried out in Mambulau Village, Kapuas Hilir District, Kapuas Regency, Central Kalimantan. The approach used in community service activities is participatory action research (PAR). The method of implementing KKN-T is carried out through posyandu and immunization activities, and counseling on the dangers of COVID-19 to the community. Supported by village officials and RT heads.  The work program "Efforts to Prevent the Spread of Covid-19 and Micro and Small Enterprises (UMK) in Mambulau Village" has been successfully implemented and smoothly. The people in the Mambulau sub-district were greatly helped by the activities to prevent the spread of COVID-19 carried out at the Posyandu. We also distributed paper bags containing masks and hand sanitizers, held socialization of nose washing at the Posyandu, then posted handwashing posters at places of worship, schools, sub-district offices, and health centers. People in the Mambulau village mostly plant banana trees around their home yards. So that a lot of post-harvest banana stem waste is found that is not utilized. Banana stem waste can be processed into chips. Banana stem chips have the potential to be used as a product for micro and small businesses that can improve the economy of the community in the Mambulau village.
Co-Authors Aldy Juarnicko Amalia Khairunnisa Gimson Luhan Herianto Herwyn Joni I Nyoman Surasana Johansyah Joni, Herwin M Damiri Nadia Desyta Ramadani Sugeng Mashabhi Yanciluk