We prove that there is a correspondence between self-similar group actions and the class of left cancellative right hereditary monoids satisfying the dedekind height property. The monoids in question turn out to be coextensive with the Zappa-Szép products of free monoids and groups, and the ideal structure of the monoid reflects properties of the group action. These monoids can also be viewed a...

Fabrication and electrochemical characterization of a sensor for the determination of epinephrine (EP), uric acid (UA) and folic acid (FA) is described. The sensor  was prepared using carbon paste electrode (CPE) modified with 3,4-dihydroxybenzaldehyde-2,4-dinitrophenylhydrazone (DDP) and carbon nanotubes (CNTs), which makes the modified electrode highly sensitive for the electrochemical detect...

background: one of the affecting factors in disturbance process of spermatogenesis is chemotherapeutic-induced oxidative stress resulted from cyclophosphamide (cp) treatment which leads to diminished sperm quality via interference in spermatogenesis process. objective: this study was conducted to investigate the effects of ethyl pyruvate (ep) in reducing the cp-induced side effects on reproduct...

background: measurement of serum β-hcg concentration commonly used to diagnose tubal ectopic pregnancy (ep) and follow up patients treated conservatively.objective: the aim of this study was to determine the predictive value of maternal serum β-hcg concentration in ruptured tubal ectopic pregnancy to help physicians identify those women who are at greatest risk.materials and methods: this is a ...

Our research team, Christpher Zappa (Lamont-Doherty Earth Observatory), Michael Banner (LamontDoherty Earth Observatory and University of New South Wales) and Howard Schultz (University of Massachusetts, Amherst), conducted a proof-of-concept study to assess the effectiveness of a new passive optical technique based on polarimetry. Conventional optical remote sensing techniques rely on light am...

In this paper we study some properties of reducible surfaces, in particular of unions of planes. When the surface is the central fibre of an embedded flat degeneration of surfaces in a projective space, we deduce some properties of the smooth surface which is the general fibre of the degeneration from some combinatorial properties of the central fibre. In particular, we show that there are stro...

In this paper, a nanostructured modified electrode was fabricated by incorporating of 2,2′-[1,9-nonanediylbis(nitriloethylidyne)]-bis-hydroquinone (NNH) as a newly synthesized modifier and TiO2 nanoparticles to the carbon paste (MTCPE) and then was used for the electroanalysis of epinephrine (EP). The electrochemical studies were carried out by using cyclic voltammetry, chronoamperom...

Four E-prostanoid (EP) receptors, designated EP(1), EP(2), EP(3), and EP(4), mediate the cellular effects of prostaglandin E(2) (PGE(2)). The present studies pharmacologically characterize the vasopressor and vasodepressor EP receptors in wild-type mice (EP(2)(+/+) mice) and mice with targeted disruption of the EP(2) receptor (EP(2)(-/-) mice). Mean arterial pressure (MAP) was measured via a ca...

While some researchers have questioned the efficacy of corrective feedback (CF), other researchers believe that CF can be effective if implemented through new technology types, including e-portfolio (EP). However, whether EP can be used as a medium of providing CF for language learners at different levels of language proficiency is still unknown. The purpose of the present study, therefore, was...

PGE(2) is a potent stimulator of renin release. So far, the contribution of each of the four PGE(2) receptor subtypes (EP(1)-EP(4)) in the regulation of renin release has not been characterized. Therefore, we investigated the effects PGE(2) on renin secretion rates (RSR) from isolated, perfused kidneys of EP(1)-/-, EP(2)-/-, EP(3)-/-, EP(4)-/-, and wild-type mice. PGE(2) concentration dependent...