The monitoring of mechanical deformation and damage of composite materials is normally performed by established analytical methods,such as strain gauges and optical and piezoelectric ***,large areas outside of the mea...
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The monitoring of mechanical deformation and damage of composite materials is normally performed by established analytical methods,such as strain gauges and optical and piezoelectric ***,large areas outside of the measuring cell remain unconsidered.A large-area sensitive sensor for composites is presented,which is simply generated by printing a carbon layer on the reinforcing glass fiber fabrics or on any composite *** printed sensors enable to determine mechanical deformations and damages of the entire component and it responds with a measurable electrical resistance to external tension or pressure without any *** strongest influence on sensor signal was identified with low carbon concentration and thin *** sensors signal linearly correlates with the degree of deformation and bending velocity whereas bending direction can be identified through signal change under residual tensile stress or compressive stress.
BACKGROUND AND PURPOSE:The Pipeline Embolization Device was reported to be safe and effective in the treatment of sidewall aneurysms,preserving the patency of the vessels covered by the ***,to date,the safety and effi...
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BACKGROUND AND PURPOSE:The Pipeline Embolization Device was reported to be safe and effective in the treatment of sidewall aneurysms,preserving the patency of the vessels covered by the ***,to date,the safety and efficacy of this device in treating bifurcation aneurysms remains *** report our preliminary experience with the use of the Pipeline Embolization Device in the management of MCA aneurysms located at the bifurcations,including mid-and long-term follow-up *** AND METHODS:Wide-neck MCA aneurysms,which give rise to a bifurcating or distal branch in which other endovascular techniques are thought to be unfeasible or more risky,were *** including demographics,aneurysm features,antiplatelet therapy,complications,and angiographic follow-up results for up to 30 months were ***:Twenty-five aneurysms located at the MCA bifurcation(n=21)or distal(n=4)were *** these,22 were small and 3 were large.A single device was used in all *** deaths occurred in the *** patients had at least 1 control angiographic study,21 of which were DSA(3;0 months),which showed that 12 of the rising branches were patent whereas 6 were filling in reduced caliber and 3 were occluded *** to the last angiographic follow-up,complete occlusion was revealed in 21 of 25 aneurysms(84%).CONCLUSIONS:The Pipeline Embolization Device provides a safe and effective treatment alternative for wide-neck MCA aneurysms that give rise to a bifurcating or distal branch when other endovascular techniques are thought to be unfeasible or more risky.
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