Interspersions and dispersions

Interspersions and Fractal Sequences Associated with Fractions c/d

Suppose c ≥ 2 and d ≥ 2 are integers, and let S be the set of integers ⌊ c/d ⌋ , where j and k range over the nonnegative integers. Assume that c and d are multiplicatively independent; that is, if p and q are integers for which c = d, then p = q = 0. The numbers in S form interspersions in various ways. Related fractal sequences and permutations of the set of nonnegative integers are also disc...

Dispersions and Coatings

Characterization of Olanzapine – Solid dispersions.

Aim: To enhance the aqueous solubility of olanzapine by using the Solid dispersion technique. Solid dispersions of Olanzapine were prepared by the dispersion method using using PGS and SSG as carriers. Drug:carrier ratios such as 1:1, 1:2, 1:4, 1:6, 1:8 and 1:10 were tried for optimization. Characterization was done by phase solubility, in vitro release, saturation solubility, permeation, wetta...

Partial Complements and Transposable Dispersions

Suppose A = {a(i, j)}, for i ≥ 0 and j ≥ 0, is the dispersion of a strictly increasing sequence r = (r(0), r(1), r(2), . . .) of integers, where r(0) = 1 and infinitely many postive integers are not terms of r. Let R be the set of such sequences, and define t on R by tr(n) = a(0, n) for n ≥ 0. Let F be the subset of R consisting of sequences r satisfying ttr = r. The set F is characterized in t...

Rheology of Concentrated Dispersions

In t h i s paper we b r i e f l y p resen t t h e main re levan t physical q u a n t i t i e s i n t h e rheology of concentrated d i spers ions . Main l i n e s o f t h r e e t o p i c s ( s h e a r v i scos i ty , sedimentation ve loc i ty and aggregation processes) a r e then given. The importance o r ordered or random s t r u c t u r e s is emphasized. Nature and i n d u s t i a l processes...