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Dr. Ratih Damayanti
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ratih_turmuzi@yahoo.com
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+622187914511
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ejournal_wrj@gmail.com
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Research Center for Biomaterials,Indonesian Institute of Sciences Jl. Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
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INDONESIA
Wood Research Journal : Journal of Indonesian Wood Research Society
Published by Masyarakat Peneliti Kayu Indonesia
ISSN : 20873840     EISSN : 27749320     DOI : 10.51850/wrj
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Wood Research Journal is the official journal of the Indonesian Wood Research Society. This journal is an international medium in exchanging, sharing and discussing the science and technology of wood. The journal publishes original manuscripts of basic and applied research of wood science and technology related to Anatomy, Properties, Quality Enhancement, Machining, Engineering and Constructions, Panel and Composites, Entomology and Preservation, Chemistry, Non Wood Forest Products, Pulp and Papers, Biomass Energy, and Biotechnology. Besides that, this journal also publishes review manuscripts which topics are decided by the Editors.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 1 (2015): Wood Research Journal" : 5 Documents clear
Effects of Working Time and the Volume and Weight of Timber on Productivity of Log Loader Caterpillar Type 966 F and WL 980 C Benoni Kewilaa; Apri Tehupeiory
Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2015.6.1.8-13

Abstract

Timber harvesting involves a series of activities to move timber from harvesting sites to the processing sites. The activities could be divided into four main components: felling, skidding, hauling and stockpiling. Loading at the landing site and unloading of cargo at the log yard are some of the major activities in timber harvesting. The overall activity is influenced by various factors such as timber volume and weight as well as working time. However, there has been lack of empirical  information about what factors influenced by the productivity of timber harvesting in tropical forest in eastern Indonesia. Thus, the aim of this study was to determine the effect of timber volume and weight as well as the working time and their interaction on the productivity of Log Loader Caterpillar 966 F Type and WL 980 C which are the most commonly used equipments in tropical timber harvesting in Indonesia. The multiple linear regression analysis showed that on the loading productivity, the volume and weight of timber, the working time and interaction among them showed positive coefficient regression but others showed negative coefficient regression; while on the unloading productivity, volume, the working time, interaction between volume and weight of timber, and interaction between weight of timber and working time showed positive coefficient regression but others showed negative coefficient regression; and on loading and unloading productivity of cargo per round trip hauling, volume and weight of timber showed positive coefficient regression, but their interaction shows negative coefficient regression. Thus, these factors were taken into account in predicting the magnitude of tool productivity.
Dimensional Stability and Characteristics of Modified Young Teak (Tectona grandis L.f.) Wood with PEG-1000 Tomy Listyanto; Muhammad Navis Rofii; Keisuke Ando; Nobuaki Hattori
Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2015.6.1.14-20

Abstract

The aim of this study was to investigate the effect of wood modification with polyethylene glycol (PEG)-1000 at five concentrations to improve dimensional stability, drying, machining and finishing characteristics of young teak wood. A total of 12 samples for each treatment was prepared to measure an Anti Shrink Efficiency (ASE), as a parameter of dimensional stability and its drying characteristics. Six samples for each treatment were prepared to evaluate machining and finishing characteristics. PEG-1000 with five concentration levels of 20%, 30%, 40%, 50% and 60% were impregnated to modify the samples, except control. Afterward, all samples were kiln dried to gain 12% moisture content. ASE was determined by comparing shrinkage percentage of treated sample with those of untreated one. Warping and surface checks were measured as drying characteristics and machining test was conducted in accordance to ASTM D1666-2004. After coating with a nitrocellulose system, surface quality were evaluated by conducting cross-cut test (ASTM D3359), coin test, delamination test (SNI 01-5008.2-1999b) and glossyness test (SNI-06-6052-1999a). Result shows that dimensional stability of impregnated samples with concentration of 30~60% was successfully improved, with ASE of 52~62%. All treated samples demonstrated good drying characteristics and defect-free areas which were more than 90% under machining test. Surface evaluation by delamination test, glossyness test, and coin test indicated that all impregnated samples were well coated by a nitrocellulose system. However, only impregnated samples in concentration of 20% and 30% showed a good result in cross-cut test. Impregnation with PEG-1000 in concentration of 30% is recommended to modify young teak wood. 
The Changes in Microstructure and Thermal Constant in Conversion of Carbonized Wood to Silicon Carbide Composite Joko Sulistyo; Sri Nugroho Marsoem; Toshimitsu Hata
Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2015.6.1.30-36

Abstract

Carbonized wood which possesses microstructure with random orientation graphitic crystallites and with pores between the graphitic crystallites, is potentially developed into new material of silicon carbide (SiC) composite, a high performance material for engineering purposes. This paper investigates the development of the microstructure in the turbostratic carbon phase and the formation of SiC crystal from the reaction of carbon and SiO2. Results show the turbostratic microstructure in carbonized wood lead to the possible formation of SiC compound in the manufacturing of SiC/SiO2/Ccomposite. The heat treatment at 1800ºC on the mixture of SO2 and carbonized wood creates the formation of SiC compound, which improves the degree of microstructure ordering. The improvement of microstructure turbostratic carbon and the growth of graphitic crystallites in turbostratic carbon improves the thermal conductivity of SiC/SiO2/C composite comparingwith those of carbonized wood composite.
Potential Utilization of Wooden Particleboard Patent to Analyze Research and Development Foresight Sasa Sofyan Munawar; Firman Tri Aji; Tommy Hendrix; Bambang Subiyanto
Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2015.6.1.21-29

Abstract

Initiating commodities development from natural resources transforms into primarily issue that preserve many  opportunities in utilization of potential and useful diversification model especially wood products. The value of technology analyzes foresight need to be used optimally to seek many opportunities in new variation technology that can implemented into market demand. Now the new technology has pushed into much needed to optimize the amount of raw material that could be processed into new product diversification. One of the problem solution that could comply with analyzing patent database is to find technology from Research and Development (R & D) result to be ready to use, for instance particleboard products as wooden product diversification. This paper discusses on how user could know their development of technology for market orientation through patent portfolio, licensing, status, competitor, innovation and monitoring on emerging market with patent database which has been registered on WIPO fields. Methodology applied in this paper is based on software named Total Patent in order to see more information related to particleboard technology utilization as potential consideration through leading patent-issuing authorities. The aim of paper is to obtain data from patent analysis in particleboard and to find out the development of technology foresight products which have been produced as well as how competitors movement, especially in wood utilization. The conclusion from utilization of R & D on particleboard patent database could be applied in case of developing opportunity in disseminating on industrial and stakeholders which requires impact on newest implementation of technology and level competitiveness in appropriate designation to wooden based products commercialization.
Service Life of Railway Wood Sleepers in Indonesia Djarwanto Djarwanto; Sihati Suprapti; Sri Rulliaty
Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2015.6.1.1-7

Abstract

Wood offers natural advantages tremendously such as their elasticity, flexibility and resistance against compression as well as force impact.  Therefore, wood material is astonishingly better material than concrete for railway sleepers. In spite of wood material’s advantages, the material is susceptible to attack by organisms. This paper observes the service life of wood sleepers in Java, Indonesia. Wood sleepers were observed visually from the ground railway system, Banten Province includes wood species identification macroscopically and organism’s attack. Results reveal that natural wood resistance of the sleepers are relatively high, then sleepers were predicted to be last long. Sleepers wood species are teak (Tectona grandis), balau (Hopea sp.), merbau (Intsia bijuga), and ulin (Eusideroxylon zwageri). Sleepers were also found deteriorated by fungus during five months instalment. Decaying fungi observed are Dacryopinax sp., D. spathularia, Lentinus sp., Panus sp., Pycnoporus sp., P. sanguineus, Polyporus spp., Schizophyllum commune, and Trametes sp.

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