منابع مشابه
Acetylation of wood – A review
Wood is a porous three dimensional, hydroscopic, viscoelastic, anisotropic bio-polymer composite composed of an interconnecting matrix of cellulose, hemicelluloses and lignin with minor amounts of inorganic elements and organic extractives. Some, but not all, of the cell wall polymer hydroxyl groups are accessible to moisture and these accessible hydroxyls form hydrogen bonds with water. As the...
متن کاملProperties of Wood and Structural Wood Products
Wood differs from other construction materials because it is produced in a living tree. As a result, wood possesses material properties that may be significantly different from other materials normally encountered in structural design. Although it is not necessary to have an in-depth knowl edge of wood anatomy and properties, it is necessary for the engineer to have a general understanding of ...
متن کاملDuncan Wood
Mr. Duncan Wood, formerly Consultant Surgeon to e Royal Hospital, Bristol, Cossham Memorial HosBristol, and to Bridgwater Hospital, Somerset, 'ed on July 24th, 1969, at the age of 82. He was born on September 2nd, 1886, at iCorsham, J'tshire, where his father was in General Practice. ? was educated at the Imperial Service College, ^ich was at Windsor in those days. From there he ?nt to the Lond...
متن کاملWormy wood?
Background: Post thrombotic syndrome (PTS) is a burdensome and costly complication of deep venous thrombosis (DVT) that develops in 20–40% of patients within 1–2 years after symptomatic DVT. Affected patients have chronic leg pain and swelling and may develop ulcers. Venous valve disruption from the thrombus itself or thrombus-associated mediators of inflammation is considered to be a key initi...
متن کاملWood Dust
ed from the death certificates. Woodworking was associated with an ageand raceadjusted odds ratio of 0.9 (95% CI, 0.7-1.0). The odds ratio for occupations ìn wood products industries was 0.7 (0.5-0.9) and that for carpenters was 0.9 (0.7-1.1). Fincham et aL. (1993) reported on a case-control study of cancers at several sites, using data from the Alberta Cancer Registry, Canada. On the basis of ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1867
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/27.8.281