Density functional theory (DFT) models including explicit water molecules have been used to model the redox scavenging mechanism of aromatic cyclic seleninates. Experimental studies have shown that methoxy substitutions affect the rate of scavenging of reactive oxygen species differently depending upon the position. Activities are enhanced in the para position, unaffected in the meta, and decre...

OBJECTIVE To evaluate postoperative long-term cyclic and continuous administration of combined oral contraceptive (OC) pills in preventing endometriosis-related pain recurrence. DESIGN Prospective, randomized, controlled trial. SETTING Tertiary care university hospital. PATIENT(S) Three hundred eleven women who underwent laparoscopic excision for symptomatic ovarian endometrioma. INTERV...

The character table of the fully nonrigid water cluster (cyclic forms), (H_{2}O){_i}, with C{_ih} symmetry derived for the first time, for 2<=i <=6. The group of all feasible permutations is the wreath product of groups S{_i}[S{_2}] which consists of i!2i operations for i = 2, ..., 6 divided into ( w.r.t) 5, 10, 20, 36, 65 conjugacy classes and 5, 10, 20, 36, 65 irreducible representations resp...

Because of the central role of fibrinogen binding in platelet aggregation and recent evidence implicating S-nitrosothiol compounds in the platelet inhibitory effects of endogenous and exogenous organic nitrate compounds, we examined the effect of the S-nitrosothiol S-nitroso-N-acetylcysteine (SNOAC) on fibrinogen binding to gel-filtered human platelets. We found that SNOAC markedly inhibited th...

The purpose of this paper is to calculate the cyclic homology of rings of integers of global fields. We accomplish this by explicitly computing the homology of the simple complex associated to Tsygan’s double complex. To accomplish this, we first compute the cyclic homology of cyclic algebras, i.e., algebras of the form A = R[t]/(P (t)), where P is a monic polynomial with coefficients in R. Mor...

We formulate the construction of cyclic partially balanced incomplete block designs with 2 associate classes as a combinatorial optimization problem. We propose an algorithm based on tabu search to tackle the problem. Our algorithm constructed 32 new cyclic designs.

Carbon paste electrode modified with cobalt impregnated zeolite was prepared by mixing of cobalt_zeolite (Co_Z) and graphite powder with different percent. The electrochemical oxidation of cefixime at such electrodes was investigated using the cyclic voltammetric and amperometric techniques. It is not electrochemically active towards cefixime oxidation in 0.1 M phosphate buffer solution (pH=7) ...

The C-terminal thioesterase (TE) domains from nonribosomal peptide synthetases (NRPSs) catalyze the final step in the biosynthesis of diverse biologically active molecules. In many systems, the thioesterase domain is involved in macrocyclization of a linear precursor presented as an acyl-S-enzyme intermediate. The excised thioesterase domain from the tyrocidine NRPS has been shown to catalyze t...

Permeabilization of amoebae of Dictyostelium discoideum with saponin was found not to uncouple the chemotactic cell surface cyclic AMP receptors from inositol trisphosphate (IP3) formation, and stimulation of permeabilized amoebae with 50 nM-cyclic AMP produced peaks of IP3 at 5, 15 and 30 s in a manner comparable to that seen previously in non-permeabilized cells. The possible involvement of a...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Left-orderable groups . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Left-orderability of 3-manifold groups . . . ...