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Maria Ashioti John S Beech Andrew S Lowe Michel Bernanos Andrew McCreary Michel M Modo Steve CR Williams 《BMC neuroscience》2009,10(1):82
Background
5HT1A agonists have previously been shown to promote recovery in animal models of stroke using ex vivo outcome measures which have raised the hopes for a potential clinical implementation. The purpose of this study was to evaluate the potential neuroprotective properties of a novel 5HT1A agonist DU123015 in 2 different models of transient focal ischaemic stroke of varying severities using both in vivo neuroimaging and behavioural techniques as primary outcome measures. For these studies, the NMDA receptor antagonist MK-801 was also utilized as a positive control to further assess the effectiveness of the stroke models and techniques used. 相似文献203.
Jennifer Wallis 《Aequationes Mathematicae》1973,9(2-3):306-306
204.
Material optimisation for AlGaN/GaN HFET applications 总被引:1,自引:0,他引:1
Z. Bougrioua I. Moerman N. Sharma R. H. Wallis J. Cheyns K. Jacobs E. J. Thrush L. Considine R. Beanland J. -L. Farvacque C. Humphreys 《Journal of Crystal Growth》2001,230(3-4):573-578
An optimisation of some growth parameters for the epitaxy of AlGaN–GaN based heterostructure field effect transistors (HFET) at low pressure in a new 3 * 2″ MOVPE reactor is presented. Some possible processes for the growth of semi-insulating buffers have been identified and are described. TEM analysis shows that the insulating character is not due to a high density of dislocations, whereas SIMS analysis shows that classical impurity (Si, O and C) concentrations are in the same range as in conductive undoped layers. Further studies are needed to identify the traps responsible for the compensation of the GaN layers. The properties of the two-dimensional electron gas (2DEG) located at the AlGaN–GaN interface can be tuned by modifying the characteristics of the AlGaN layer and of the insulating buffer. The best mobility (1500 cm2 V−1 s−1 for n6×1012 cm−2) is obtained when using a thick buffer layer, whereas the sheet carrier density is found to increase with the Al content in the undoped supply layer and reaches 1.1×1013 cm−2 for a composition of 24%. 相似文献
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Geurst's equations are used to predict the speed of disturbance wave propagation in a mixture containing a compressible dispersed phase. Results are obtained for the case when there is no relative velocity ahead of the disturbance and are compared with Karplus' data for air-water mixtures. The changes in density, void fraction and the velocities of each phase across the wave are predicted. 相似文献
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