نتایج جستجو برای: عدم هم جوشی kissing bond
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BACKGROUND The optimal strategy for treating coronary bifurcation lesions remains a subject of debate. With bare-metal stents, single-stent approaches appear to be superior to systematic 2-stent strategies. Drug-eluting stents, however, have low rates of restenosis and might offer improved outcomes with complex stenting techniques. METHODS AND RESULTS Patients with significant coronary bifurc...
A spherical (n,N, α)-code is a set {x1, . . . ,xN} of unit vectors in R such that the pairwise angular distance betweeen the vectors is at least α. One tries to find codes which maximize N or α if the other two values are fixed. The kissing number problem asks for the maximum number k(n) of nonoverlapping unit balls touching a central unit ball in n-space. This corresponds to the special case o...
Carlos Chagas is credited with the discovery of Chagas disease because of his 1909 published findings of the Trypanosoma cruzi parasite isolated in the blood of a Brazilian patient [1]. Following his discovery, reports of Chagas disease from across Latin America were published, classifying these countries as endemic with continual transmission occurring [2]. The United States has long been cons...
To divide a cake into equal sized pieces most people use knife and mixture of luck dexterity. These attempts are often met with varying success. Through precise geometric constructions performed the replacing Euclid's straightedge without using compass we find methods for solving certain cake-cutting problems exactly. Since it is impossible to exactly bisect circular when its center not known, ...
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