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An improved horizontal slab gel electrophoresis apparatus was developed for the separation of DNA restriction fragments. The apparatus was designed for both analytical and preparative runs. The use of agarose or polyacrylamide wicks rather than paper wicks simplifies the use of and increases the capabilities of horizontal slab gel electrophoresis.
The effect of changing effective blaze angle across a concave grating coated with an EUV reflecting multilayer is examined. It is concluded that conventionally ruled concave multilayer gratings can have a wide Nike Air Max 2011 Mens wavelength passband.
Let H be an infinite Hankel matrix of known finite rank r. A new algorithm for the numerical calculation of the singular values and vectors of H is presented. The method proceeds by reduction to the singular value problem for an r×r matrix; this is achieved without solving for the poles of the symbol of H. The resulting algorithm is of order r3.
We construct non-random bounded discrete half-line Schrödinger operators which have purely singular continuous spectral measures with fractional Hausdorff dimension (in some interval of **Nike Air Max Thea Toronto** energies). To do this we use suitable sparse potentials. Our results also apply to whole line operators, as well as to certain random operators. In the latter case we prove and compute an exact dimension of the spectral measures.