Hollow Trees
نویسندگان
چکیده
منابع مشابه
Why are so many trees hollow ? Graeme
In many living trees, much of the interior of the trunk can be rotten or even hollowed out. Previously, this has been suggested to be adaptive, with microbial or animal consumption of interior wood producing a rain of nutrients to the soil beneath the tree that allows recycling of those nutrients into new growth via the trees roots. Here I propose an alternative (non-exclusive) explanation: suc...
متن کاملWhy are so many trees hollow?
In many living trees, much of the interior of the trunk can be rotten or even hollowed out. Previously, this has been suggested to be adaptive, with microbial or animal consumption of interior wood producing a rain of nutrients to the soil beneath the tree that allows recycling of those nutrients into new growth via the trees roots. Here I propose an alternative (non-exclusive) explanation: suc...
متن کاملTrapping sylvatic Triatominae (Reduviidae) in hollow trees.
. infection below which mass peatment will become unfavourable in terrns of cost-effectiveness. However, it also implies that above this value variations in the prevalence of infection have little effect on the cost per infected person treated. The precise prevalence value at which this non-linearity is evident is dependent on the cost per person treated: the higher this cost, the lower the pre...
متن کاملHollow Core ?
We carried out the Gaussian fitting to the profile of PSR B1237+25 and found that six components rather than five are necessary to make a good fit. In the central part, we found that the core emission is not filled pencil beam but is a small hollow cone. This implies that the impact angle could be β < 0.5 •. The " hollow core " is in agreement with Inverse Compton Scattering model of radio puls...
متن کاملSonochemical preparation of hollow nanospheres and hollow nanocrystals.
Ceramic hollow spheres of MoS2 and MoO3 were obtained by sonochemical synthesis of MoS2 and MoO3 templated on silica nanoparticles (diameters 50-500 nm) followed by acid etching to remove the silica core. The resulting hollow materials have been characterized by elemental analysis, XPS, SEM, TEM, optical absorption, and hydrodesulfurization (HDS) studies. The TEM studies on the hollow ceramic m...
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ژورنال
عنوان ژورنال: Bulletin of Miscellaneous Information (Royal Gardens, Kew)
سال: 1912
ISSN: 0366-4457
DOI: 10.2307/4104550