The electric field profile inside a self-assembled noncentrosymmetric zirconium phosphonate (ZP) multilayer film at a gold electrode is determined by the in situ optical technique of electrochemically modulated surface plasmon resonance (EM-SPR). In these experiments, changes in the index of refraction (∆n) of a ZP film during potential modulation are measured via the EM-SPR differential reflec...

The zona pellucida (ZP) of mature pig oocytes is believed to consist of a dense filamentous meshwork, less compact on the inner and outer faces. The uneven surface of the ZP is made of unordered and stretched fibrils surrounding deep funnels which are the openings of the radial canaliculi. The topography of the ZP surface may contribute to the initial interplay between male and female gametes. ...

Birefringence of oxide glass bers drawn from glass melts through an ori ce has been detected previously [1, 2]. This birefringence is a measure of anisotropy in glass structure that can in uence ber performance properties. Birefringence is produced during ber drawing as the ber is rapidly stretched in the viscoelastic glass transition range. The birefringence is \frozen" into the glass during r...

In this paper, we prove that the group Zp is not a CI-group if n¿ 2p − 1 + ( 2p−1 p ), that is there exist two Cayley digraphs over Zp which are isomorphic but their connection sets are not conjugate by an automorphism of Zp. c © 2002 Elsevier Science B.V. All rights reserved.

For a number field F and an odd prime p, let F˜ be the compositum of all Zp-extensions Λ˜ associated Iwasawa algebra. Let GS(F˜) Galois group over maximal extension which is unramified outside p-adic infinite places. In this paper we study Λ˜-module XS(−i)(F˜):=H1(GS(F˜),Zp(−i)) its relationship with X(F˜(μp))(i−1)Δ, Δ:=Gal(F˜(μp)/F˜)-invariant F˜(μp) abelian pro-p-extension F˜(μp). More precis...

The ability of domestic cat or leopard cat spermatozoa to penetrate zonae pellucidae (ZP) of salt-stored, domestic cat oocytes was examined as an assay for sperm capacitation. Ovarian oocytes were recovered after ovariectomy and matured in vitro for 18-36 h. Following removal of cumulus cells, the oocytes were used fresh, or stored (4°C, 0.5-24 weeks) in a HEPES-buffered hypertonic salt solutio...

That the zona pellucida (ZP) plays a prominent role in the physiology of some human twinning is an attractive, albeit incompletely proven, medical hypothesis. Indeed, an association has been proposed between manipulation of the ZP and/or native ZP microarchitecture and monozygotic (MZ) twins. Ovulation induction also has been theoretically linked to in vivo ZP alterations facilitating MZ twin d...

The geography and botany problems of irreducible nonspin symplectic 4-manifolds with a choice of fundamental group from {Zp,Zp⊕Zq,Z,Z⊕Zp,Z⊕Z} are studied by building upon the recent progress obtained on the simply connected realm. Results on the botany of simply connected 4-manifolds not available in the literature are extended.

In this paper, some groups Ext A (Zp, Zp) with specialized s and t are first computed by the May spectral sequence. Then we make use of the Adams spectral sequence to prove the existence of a new nontrivial family of filtration s+5 in the stable homotopy groups of spheres πpnq+(s+3)pq+(s+1)q−5S which is represented (up to a nonzero scalar) by β̃s+2b0hn ∈ Ext q+(s+3)pq+(s+1)q+s A (Zp, Zp) in the ...

Although N is discrete in R, it is not discrete in Qp, and in fact has closure Zp. This raises the possibility of p-adically interpolating a sequence an, which is really a function n 7→ an on N, to a continuous function x 7→ ax with x ∈ Zp. Our basic question is this: when does a function f : N→ Qp extend to a continuous function Zp → Qp? We will look at some concrete examples, then see what a ...