منابع مشابه
Number, size, and distribution of Peyer's patches in the human small intestine: Part I The development of Peyer's patches.
The number of Peyer's patches found in the various parts of the human small intestine has never been accurately determined. Most textbooks of anatomy put their number at 20 to 30 (Gray 1962), and only slight variations of these figures are given from one textbook to another. However, Sappey (1877), Passow (1885), and Gundobin (1892) occasionally found 70 or more patches, and Hellmann (1921) in ...
متن کاملModelling of an Optimal Membrane with Patches
Extended Abstract Paper pages (21-34)./files/site1/files/41/2Extended_Abstract.pdf
متن کاملShould metapopulation restoration strategies increase patch area or number of patches?
Managers of species that exist as metapopulations are faced with many decisions. In this paper we use a decision-theory framework to examine a fundamental management question: Should we focus on decreasing the local extinction probability of subpopulations by increasing the size of their patch, or should metapopulation viability be improved by constructing more patches? Using a spatially implic...
متن کاملPatchy populations in stochastic environments: critical number of patches for persistence.
We introduce a model for the dynamics of a patchy population in a stochastic environment and derive a criterion for its persistence. This criterion is based on the geometric mean (GM) through time of the spatial-arithmetic mean of growth rates. For the population to persist, the GM has to be >/=1. The GM increases with the number of patches (because the sampling error is reduced) and decreases ...
متن کاملCSP patches
Laplacian filters are widely used in neuroscience. In the context of brain–computer interfacing, they might be preferred to data-driven approaches such as common spatial patterns (CSP) in a variety of scenarios such as, e.g., when no or few user data are available or a calibration session with a multi-channel recording is not possible, which is the case in various applications. In this paper we...
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ژورنال
عنوان ژورنال: Academic Emergency Medicine
سال: 1996
ISSN: 1069-6563,1553-2712
DOI: 10.1111/j.1553-2712.1996.tb03387.x