苔癬 化学特性,用途語,生産方法
解説
苔癬は，皮膚病変の名称の一つで，ほぼ均一の大きさを示す充実性丘疹が密生ないし散生し，比較的長くその状態を持続するものをいう。おもな疾患に次のものがある。(1)ウィダール苔癬 おもに項･頸部に，初め強いかゆみがあり，引っかいているうちにほぼ同大の紅色丘疹が出現，しだいに集まって平たんな局面を形成する。中年以降，とくに女性に多い。(2)毛孔性苔癬 おもに上腕･大腿伸側に，アワ粒大の毛孔性角化丘疹が播種状ないし密生して出現する。
株式会社平凡社 世界大百科事典 第２版について 情報
农业用途
Lichen is a simple slow growing plant.
Characteristically, it forms a low crust-like, leaf-like,
branching growth typically on rocks, walls and trees
. They are composite plants comprising a
fungus that has photosynthetic algal cells. Lichens get
their supply of water and nutrients from the atmosphere
and they may be sensitive indicators of atmospheric
pollution.
Lichen is an ecologically obligate, stable mutualism
between an exhabitant fungal partner and an inhabitant
population of unicellular or filamentous algal or
cyanobacterial cells. Lichen plays an important role in
soil formation. They impart their grey, yellow or green
color to the surface they cover.
The fungal partner of lichens is usually an ascomycete
(sometimes a basidiomycete), the algal partner being a
green (chlorophyta) or a blue-green (cyanophyta) alga.
About 19% of all fungi and 42% of all ascomycota are
lichenized. The number of photosynthetic partners
involved in lichen formation is relatively small; out of 40
genera involved, 25 are algae and 15 are cyanobacteria.
苔癬 上流と下流の製品情報
原材料
準備製品