Shuichi Kawai
Kyoto University
Laminated veneer lumberComposite materialFlexural strengthMaterials scienceAdhesive
What is this?
Publications 158
#1Miyuki NakagawaH-Index: 1
#2Kenji UmemuraH-Index: 21
Last. Kozo KanayamaH-Index: 10
view all 4 authors...
Background Wood is a valuable material for interiors, and the psychophysiological relaxation effects of volatile organic compounds (VOCs) from wood chips and essential oils have been reported. However, few studies have identified the odors in full-scale wooden environment, and also, differences in gender have not been clarified. In this study, we aimed to confirm the effects of VOCs emitted from interior wood walls in both human male and female participants.
2 CitationsSource
Abstract: The kinetics of several poplar (Populus alba L.) wood properties during thermal modification conducted in conventional oven with air recirculation were analysed and modelled in this paper. A wide range of properties was assessed, such as: equilibrium moisture content, sorption diagram, shrinkage coefficients, specific shrinkage coefficients, mass loss, modulus of elasticity, strength and colour. The tests were executed at different temperatures ranging from 90 °C to 180 °C and with dif...
2 CitationsSource
#1Miyuki Nakagawa (Kyoto University)H-Index: 1
#2Akitaka Kimura (Hiroshima University)H-Index: 1
Last. Shuichi Kawai (Kyoto University)H-Index: 25
view all 4 authors...
We developed a new system for measuring the NO2 sorption ability of Japanese cedar (Cryptomeria japonica) wood by referring to Japanese Industrial Standard for JIS R 1701-1 (Test method for air purification performance of photocatalytic materials, Japanese Standard Association, Tokyo, 2004). Aeration experiments were conducted using plated specimen, particle specimen, discoid specimen and wood powder with consideration of aeration condition and surface area which can contact with NO2 gas. In the...
: In recent years, highly antimicrobial properties of cedar heartwood essential oil against the wood-rotting fungi and pathogenic fungi have been reported in several papers. Antimicrobial properties against oral bacteria by hinokitiol contained in Thujopsis have been also extensively studied. The relation of naturally derived components and human immune system has been studied in some previous papers. In the present study, we focused on Japanese cedar, which has the widest artificial afforestati...
#1Anita FirmantiH-Index: 3
#2Subyakto SubyaktoH-Index: 2
Last. Shuichi KawaiH-Index: 25
view all 4 authors...
Surface density known as mass per unit area or as a product of density and thickness was analyzed as a key factor in predicting the fire performance of wood and wood based materials. Sawn timber of Mangium (Acacia mangium Willd) and Gmelina Arborea (Gmelina arborea Roxb.) in various thicknesses, manufactured particleboards and cement bonded particleboards of both species in various densities and thicknesses were used as the testing materials. Commercial particleboards, cement bonded particleboar...
#1Dimiter Ialnazov (Kyoto University)H-Index: 3
#2Yuichi Ikeda (Kyoto University)H-Index: 18
Last. Yosuke Yamashiki (Kyoto University)H-Index: 16
view all 5 authors...
#1Shoko KobayashiH-Index: 5
#2Yoshiharu OmuraH-Index: 41
Last. Shuichi KawaiH-Index: 25
view all 7 authors...
#1Kenichi AzumaH-Index: 12
#2Katsuyasu KoudaH-Index: 1
Last. Shuichi KawaiH-Index: 25
view all 8 authors...
Components extracted from cedar timber have been reported to have stress-reducing effects in humans. If the positive effects of cedar timber in indoor environments are scientifically proven, an indoor environment that utilizes cedar timber may contribute to the improvement or promotion of well-being in humans. In this study, we evaluated the effects of inhaling emissions of volatile constituents from cedar timber (Cryptomeria japonica) on the psychological and physiological factors in indoor env...
1 CitationsSource
1 CitationsSource