An inkjet recording ink comprising at least one magenta dye or cyan dye dissolved and/or dispersed in an aqueous medium, wherein a wavelength (.lamda.max) at the maximum reflection density of the ink is in a specific wavelength range (.lamda.ex) and a reflection density at the specific wavelength (.lamda.er) longer than the .lamda.Max is not more than x % of the maximum reflection density, the .lamda.ex is from 530 to 580 nm, .lamda.er is 600 nm and x is 50 in case of the magenta dye ink, and the .lamda.ex is from 580 to 630 nm, .lamda.er is 670 nm and x is 90 in case of the cyan dye ink.

 
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> Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent

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