RESUMO
The emerging concept of a magma reservoir is one in which regions containing melt extend from the source of magma generation to the surface. The reservoir may contain regions of very low fraction intergranular melt, partially molten rock (mush) and melt lenses (or magma chambers) containing high melt fraction eruptible magma, as well as pockets of exsolved magmatic fluids. The various parts of the system may be separated by a sub-solidus rock or be connected and continuous. Magma reservoirs and their wall rocks span a vast array of rheological properties, covering as much as 25 orders of magnitude from high viscosity, sub-solidus crustal rocks to magmatic fluids. Time scales of processes within magma reservoirs range from very slow melt and fluid segregation within mush and magma chambers and deformation of surrounding host rocks to very rapid development of magma and fluid instability, transport and eruption. Developing a comprehensive model of these systems is a grand challenge that will require close collaboration between modellers, geophysicists, geochemists, geologists, volcanologists and petrologists. This article is part of the Theo Murphy meeting issue 'Magma reservoir architecture and dynamics'.
RESUMO
No standardized assessment of aphasic symptoms for stroke patients in the acute phase has as yet been published in the German language. Current test batteries such as the AAT are too time-consuming and cannot be performed on severely impaired patients. A short test for the examination of aphasic and dysarthric symptoms has been developed which contains 7 subtests in three main areas: spontaneous speech, comprehension and planning of movements, speech and language abilities. Since abilities in acute cases may only be functionally impaired and often only detectable after stimulation, standardized stimulation is applied in most of the subtests. In this way it is possible to test acute stroke patients for aphasic and dysarthric symptoms. The course of recovery in a typical case is described.
