This paper continues the examination of the structure of pseudocomplemented distributive lattices. First, the Congruence Extension Property is proved. This is then applied to examine properties of the equational classes ¿Sn, — lá«So), which is a complete list of all the equational classes of pseudocomplemented distributive lattices (see Part I). The standard semigroups (i.e., the semigroup gene...

Some general theorems concerning residual finiteness of algebras are given that are applied to show that every idempotent semigroup satisfying xyzx = xzyx identically is a subcartesian product of certain simple semigroups of order two and three. Introduction. In this paper we present a technique involving a special type of infinitely long sentence which seems of fairly general applicability in ...

Tabako-ohiturak gaixotasun kroniko gehienak pairatzeko arriskua areagotu dezakeen zabaldutako aztura da. Hauen artean, hipertentsioaren eragilea izan daitekeela behatu Honez gain, jarduera fisikoarekiko (JF) tolerantzian eta bihotz-biriketako funtzioan eragin kaltegarria dezake. Izan ere, JF-ak arrisku hauen garapena murriztu ditzake, bihotz-birika gaitasunean (BBG) hobekuntzak eragiten. Hortaz...

Cryptosporidium parvum and C. hominis are protozoan parasites responsible for cryptosporidiosis, an acute gastrointestinal illness that can be life-threatening for immunocompromised persons. Sources and genotypes of Cryptosporidium oocysts were investigated in two agricultural areas within the Wachusett Reservoir watershed, a drinking water source for Boston, Massachusetts. Two brooks (denoted ...

We prove that any gradient shrinking Ricci soliton has at most Euclidean volume growth. This improves a recent result of H.-D. Cao and D. Zhou by removing a condition on the growth of scalar curvature. A complete Riemannian manifold M of dimension n is called gradient shrinking Ricci soliton if there exists f ∈ C (M) and a constant ρ > 0 such that Rij +∇i∇jf = ρgij , where Rij denotes the Ricci...

133. Watson LE, Dickhaus DW, Martin RH: Left ventricular aneurysm: Preoperative hemodynamics, chamber volume and results of aneurysmectomy. Circulation 52: 868, 1975 134. Popp RL, Wolfe SB, Hirata T, Feigenbaum H: Estimation of right and left ventricular size by ultrasound. Am J Cardiol 24: 523, 1969 135. Pombo JF, Troy BL, Russell RO Jr: Left ventricular volumes and ejection fraction by echoca...