Pollen from cedar and cypress trees is a major cause of seasonal hypersensitivity in humans in several regions of the Northern Hemisphere. We report the first crystal structure of a cedar allergen, Jun a 1, from the pollen of the mountain cedar Juniperus ashei (Cupressaceae). The core of the structure consists primarily of a parallel -helix, which is nearly identical to that found in the pectin...

Three kinds of softwoods (Douglas fir, radiata pine, and Sugi) were used to test the possibility their classification via near infrared (NIR) spectroscopy. In a previous study, authors presented that content Korean softwood extractives (larix, red cedar, cypress) influenced wood classification. For expanding extent species be considered in analysis, three foreign newly introduced. Prior compari...

Abstract In this study, the out-of-plane shear strength of hybrid cross-laminated timber (CLT) with outer layers hinoki (hinoki cypress, Chamaecyparis obtusa ) and inner sugi (Japanese cedar, Cryptomeria japonica is investigated for four different layer configurations. To investigate influence from rolling properties cross on CLT, stress analysis was conducted using analogy method. The nominal ...

Field observations indicate that the distribution of certain forest tree species is modified by periodic flooding of the soil. There appear to be distinct differences between species with respect to the amount of flooding which they will tolerate. Overcup oak, for example, often occurs on areas which are flooded for considerable periods of time during the year, but northern red oak usually occu...