A Fourth Cataractous Family.

Bounding CKM Mixing with a Fourth Family

CKM mixing between third family quarks and a possible fourth family is constrained by global fits to the precision electroweak data. The dominant constraint is from nondecoupling oblique corrections rather than the vertex correction to Z → bb used in previous analyses. The possibility of large mixing suggested by some recent analyses of FCNC processes is excluded, but 3-4 mixing of the same ord...

Constraints on the mixing of a fourth family of quarks.

This paper studies the constraints on the mixing of a possible fourth family of quarks. A mixing angle convention is introduced in which sij sin 8ij represents to a good approximation the ij element of the quark mixing matrix (; < j). A range of parameters is found, ~14 < 0.06, ~24 < 0.1; s14s24 O(10V4 10A3) and/or ~14~34 2 O(10m2), f or which the contribution of the fourth family to the KL KS ...

Human Senile Cataractous Lens Protease

A proteolytic enzyme was isolated from human senile cataractous lens by anion-exchange and gel-filtration chromatography. Sedimentation and zoneelectrophoretic experiments indicated a high degree of homogeneity for the enzyme. A molecular weight of 27000 was calculated from measurements of sedimentation velocity and diffusion coefficient. Chelating agents decreased activity which could be resto...

New family of Two-Parameters Iterative Methods for Non-Linear Equations with Fourth-Order Convergence

The least mean fourth (LMF) adaptive algorithm and its family

New steepest descent algorithms for adaptive filtering and have been devised which allow error minimization in the mean fourth and mean sixth, etc., sense. During adaptation, the weights undergo exponential relaxation toward their optimal solutions. T ime constants have been derived, and surprisingly they turn out to be proportional to the time constants that would have been obtained if the ste...