このエントリーをはてなブックマークに追加
ID 193
Eprint ID
193
FullText URL
Title Alternative
Studies on the inner structure of wood by the ultra-soft X-ray photograph. : I. On the constitution of annual ring of coniferous woods.
Author
Kuroyanagi, Shigeru
Nishida, Teruaki
Abstract
X-ray can penetrate opaque materials such as wood, however the degree to which X-ray radiation penetrates depends upon density and thickness of cellwalls or specimens of wood and timbers. Penetration of the large order of wave length of X-ray is weaker than that of the short order of wave length. This work is one of the studies on the inner structure of wood and timbers by the ultra-soft X-ray(the longest wave length), and in this paper the constitution of annual rings of some coniferous wood is showed and examined by the ultra-soft X-ray photographs. The photographic conditions are as follows: Insturument; SOFTEX-EMB. Secondary voltage; 14 KVP. Secondary electric current; 5 mA. Distance of specimens and X-ray tube; 40 cm. Thickness of specimens(crossection to the longitudinal) ; 0.7 cm. Radiation time of X-ray; 10 sec. Developing time of photographic film; 10 min. at 20℃. The experimental results are showed in photos. 1-6, and a clear contrast on X-ray films was brought out between the tissues of annual rings, spring arid summer woods, false rings and coloured bands, compression wood, branches and nots. This seems to be on available method for studies of the inner construction of woods and timbers.
Published Date
1965
Publication Title
岡山大学農学部学術報告
Publication Title Alternative
Scientific Reports of the Faculty of Agriculture Okayama University
Volume
volume26
Issue
issue1
Publisher
岡山大学農学部
Publisher Alternative
Faculty of Agriculture, Okayama University
Start Page
9
End Page
18
ISSN
0474-0254
NCID
AN00033029
Content Type
Departmental Bulletin Paper
language
日本語
File Version
publisher
Refereed
False
Eprints Journal Name
srfa