By a knot we mean a pair (S, M~) with M~ a smooth closed oriented submanifold of S (m^3). If such a knot is given and i:S-> gm+z j s t j ^ standard embedding, then one can isotope / in an essentially unique way (Lemma 1 below) to an embedding j :s -+S whose intersection with iS is M c S transversally. The «-fold cyclic branched cover of (S, iS) branched along (jS, M~) exists uniquely and is a m...

Effect of different monoamines and estradiol were studied on cyclic AMP (CAMP) accumulation in hypothalami from 21 day old female rats. Incubation for 5 min with 10D4r/r epinephrine, norepinephrine or dopamine resulted in an increase in c!AMP accumulation in the hypothals$%s. Incubation of hypothalamic tissue with estradiol (4 x 10 M to 2 x 10 -5M) also resulted in an increase in cyclic AMP lev...

We consider discrete invertible dynamical systems L with the property that the kth iterate L k possesses (reversing) symmetries that are not possessed by L. A map U is called a (reversing) k-symmetry of L if k is the smallest positive integer for which U is a (reversing) symmetry of L k. In this paper we discuss the particular case that L possesses a cyclic reversing k-symmetry group. We derive...

iV6,0P’-Dibutyryl cyclic 3’,5’-AMP stimulated the rate of incorporation of 3H-uridine into nuclear RNA in two consecutive waves without affecting the accumulation of labeled uridine in the free pool of the nuclei. N6,02’-Dibutyryl cyclic 3’,5’-AMP exerted its maximal effect at a concentration of 10e4 M. At this concentration the cyclic nucleotide had no effect on the rate of nuclear ATP synthes...

We derive a number of local identities of arbitrary rank involving Jacobi elliptic functions and use them to obtain several new results. First, we present an alternative, simpler derivation of the cyclic identities discovered by us recently, along with an extension to several new cyclic identities of arbitrary rank. Second, we obtain a generalization to cyclic identities in which successive ter...

We consider the space of orderings of the field R((x, y)) and the space of orderings of the field R((x))(y), where R is a real closed field. We examine the structure of these objects and their relationship to each other. We define a cyclic 2-structure to be a pair (S, Φ) where S is a cyclically ordered set and Φ is an equivalence relation on S such that each equivalence class has exactly two el...

Bentea and Tu{a}rnu{a}uceanu~(An. c{S}tiinc{t}. Univ. Al. I.Cuza Iac{s}, Ser. Nouv{a}, Mat., {bf 54(1)} (2008), 209-220)proposed the following problem: Find an explicit formula for thenumber of fuzzy subgroups of a finite hamiltonian group of type$Q_8times mathbb{Z}_n$ where $Q_8$ is the quaternion group oforder $8$ and $n$ is an arbitrary odd integer. In this paper weconsider more general grou...

A number of protein modification activities are present in the protein-synthesizing complex isolated from rabbit reticulocytes. These enzymes are solubilized by sedimentation of the ribosomes through buffered sucrose containing 0.5 M KCl, and have been partially purified from the high salt wash fraction by chromatography on DEAE-cellulose and phosphocellulose. The ribosomal-associated enzymatic...

The permeation characteristics of a model opioid peptide, H-Tyr-D-Ala-Gly-Phe-D-Leu-OH (DADLE), and its cyclic prodrugs [acyloxyalkoxy-based cyclic prodrug of DADLE (AOA-DADLE), coumarinic acid-based cyclic prodrug of DADLE (CA-DALE), and oxymethyl-modified coumarinic acid-based cyclic prodrug of DADLE (OMCA-DADLE)] across the blood-brain barrier (BBB) were determined using an in situ perfused ...