Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Wayan DARMAWAN"'
Autor:
Efrida Basri, Istie Sekartining Rahayu, Saefudin Saefudin, Adi Santoso, Ignasia Maria Sulastiningsih, Ratih Damayanti, Resa Martha, Wayan Darmawan
Publikováno v:
BioResources, Vol 19, Iss 2, Pp 3290-3305 (2024)
Lactic acid (LA), citric acid (CA), and glycerol (G) are renewable and environmentally friendly chemicals that could improve the qualities of short-rotation teak (SRT) woods. This study investigated the effect of thermal and chemical modification usi
Externí odkaz:
https://doaj.org/article/004881d4b4454cffb5620e38b8820568
Autor:
Gabriel Tobing, Nurul Sofiaturizkiyah, Efrida Basri, Resa Martha, Istie Rahayu, Philippe Gérardin, Wayan Darmawan
Publikováno v:
Jurnal Ilmu Pertanian Indonesia, Vol 29, Iss 4 (2024)
Scots pine (Pinus sylvestris L.) wood is one of the most popular timber export products. However, its low durability can reduce the potential and utilization of the wood. Chemical modification is one of the solutions to overcome this drawback. Chemic
Externí odkaz:
https://doaj.org/article/915cf4711add405dab7396f10beeba55
Autor:
Resa Martha, Béatrice George, Christine Gérardin-Charbonnier, Emmanuel Fredon, Istie S. Rahayu, Wayan Darmawan, Philippe Gérardin
Publikováno v:
Materials, Vol 17, Iss 15, p 3881 (2024)
Improving the durability of short-rotation wood can be achieved through chemical and thermal modification. Chemical and thermal modification can have an impact on the physicochemical properties of wood, which can affect wood’s surface characteristi
Externí odkaz:
https://doaj.org/article/71d55a26b72743dc891a85817bf8051c
Publikováno v:
Jurnal Ilmu Pertanian Indonesia, Vol 28, Iss 2 (2023)
The scarcity and high cost of high-quality sawn timber has resulted in the switching of furniture industry to using composite wood such as medium density fiberboard (MDF) as the raw material for its products. One of the factors that affect production
Externí odkaz:
https://doaj.org/article/dbba89b78ba3450e96e6abd4c3b2bdea
Autor:
Resa Martha, Mahdi Mubarok, Irmanida Batubara, Istie S. Rahayu, Loedy Setiono, Wayan Darmawan, Firmin Obounou Akong, Béatrice George, Christine Gérardin, Philippe Gérardin
Publikováno v:
Journal of Materials Research and Technology, Vol 12, Iss , Pp 1689-1699 (2021)
Short rotation teak wood has low quality especially in dimensional stability and durability. Furfurylation treatment was applied to improve technological properties of the short rotation teak wood. The purpose of the study was to improve dimensional
Externí odkaz:
https://doaj.org/article/5a30491675c040a6a47f6addc81268dd
Autor:
Efrida Basri, Nisrina Hanifah, Resa Martha, Istie S. Rahayu, Mahdi Mubarok, Wayan Darmawan, Philippe Gérardin
Publikováno v:
Forests, Vol 13, Iss 11, p 1938 (2022)
Short rotation teak (SRT) has a diameter of around 30 cm at the age of 15 years; however, the wood still has low quality, especially in dimensional stability and biological durability. The objective of this study was to improve dimensional stability
Externí odkaz:
https://doaj.org/article/8141c8c2caea4294951185634349ce81
Autor:
Istie Rahayu, Wayan Darmawan, Deded Sarip Nawawi, Esti Prihatini, Rohmat Ismail, Gilang Dwi Laksono
Publikováno v:
Polymers, Vol 14, Iss 20, p 4463 (2022)
Mangium (Acacia mangium Willd.) is a fast-growing wood that is widely grown in Indonesia. The impregnation method is needed to improve the qualities of the wood. In this study, TiO2 nanoparticle (79.17 nm) was produced using the hydrothermal method.
Externí odkaz:
https://doaj.org/article/522207bc3d574268bf2249f6699eee82
Publikováno v:
Jurnal Ilmu Pertanian Indonesia, Vol 24, Iss 3, Pp 227-236 (2019)
A weak bargaining position in product marketing is a serious problem for farmers including those who diversify their livelihood patterns as souvenir craftsmen. Collector traders and retailers are dominant to set prices for souvenirs. Souvenir craftsm
Externí odkaz:
https://doaj.org/article/4fadfd7efd384bf2bc7a4b8bd89f234c
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 4, Pp 3495-3503 (2019)
Wood products exposed outdoor could be weathered, especially in the tropical region with high in sun light, temperature, rain intensity, and relative humidity. Water based acrylic paint was coated on surface of teak, camphor, and pine woods for natur
Externí odkaz:
https://doaj.org/article/6aa618e97fea4d20a7cea00d28dec680
Autor:
Istie Rahayu, Esti Prihatini, Rohmat Ismail, Wayan Darmawan, Lina Karlinasari, Gilang Dwi Laksono
Publikováno v:
Polymers, Vol 14, Iss 11, p 2137 (2022)
Jabon (Anthocephalus cadamba) is a fast-growing wood with low quality due to its low density and strength. The quality can be increased by modifying the wood through impregnation with various chemical compounds. In this study, jabon was impregnated w
Externí odkaz:
https://doaj.org/article/34fc809ed68e434282838027cbb6819e