منابع مشابه
Fuhrman.indd MH
and fungi, are vital to the function of all ecosystems. This is largely because they exist in enormous numbers (there are roughly 5 × 10 bacteria alone worldwide) and so have immense cumulative mass and activity. They are also probably more diverse than any other organisms, so it is easy to see why the structure of microbial communities, that is, the different kinds of organisms and their abund...
متن کاملArmbrust.indd MH
microscopic, eukaryotic phytoplankton known as diatoms. These photosynthetic workhorses are found in waters worldwide, wherever there is sufficient light and nutrients. Their name is derived from the Greek diatomos, meaning ‘cut in half ’, a reference to their distinctive two-part cell walls made of silica (Fig. 1). Each year, diatom photosynthesis in the sea generates about as much organic car...
متن کاملA variety of paramyotonia congenita.
Paramyotonia congenita was first described by Eulenberg (1886). It is a rare, hereditary disorder of muscle in which severe loss of power is induced by degrees of cooling which are insufficient to affect normal muscle. Myotonia also appears on cooling. However, the paralysis produced by cooling distinguishes paramyotonia from Thomsen's disease. The weakness and myotonia can easily be produced u...
متن کامل8.12 brief comms MH
754 about the hips and by back extension; weight support is biased towards the forelimbs. This mechanism is characteristic of cursorial quadrupeds. It is associated with muscular hip retractors and with forelimbs that are dominated by bone, tendon and highly pennate muscles, which act almost like passive springs and are capable of opposing considerable weight-induced forces. This means that the...
متن کامل25.5 Brief comms MH
Transmissible pathogens are the bane of social animals, so they have evolved behaviours to decrease the probability of infection. There is no record, however, of social animals avoiding diseased individuals of their own species in the wild. Here we show how healthy, normally gregarious Caribbean spiny lobsters (Panulirus argus) avoid conspecifics that are infected with a lethal virus. Early det...
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ژورنال
عنوان ژورنال: Canadian Journal of Anaesthesia
سال: 1993
ISSN: 0832-610X,1496-8975
DOI: 10.1007/bf03009750