Let X be a chain, OP (X) the order-preserving partial transformation semigroup on X and OI(X) the order-preserving 1–1 partial transformation semigroup on X. It is known that both OP (X) and OI(X) are regular semigroups. We extend these results by characterizing the regular elements of the semigroups OP (X,Y ), OI(X,Y ), OP (X,Y ) and OI(X,Y ) where ∅ = Y ⊆ X,OP (X,Y ) = {α ∈ OP (X) | ranα ⊆ Y ...

Increasingly, workers have psychological work-related complaints, endangering their work ability and causing considerable economic losses. Many employees consult their general practitioner (GP). He, however, often pays insufficient attention to work-relatedness or to coordination with occupational physicians (OPs). Appropriate guidelines are missing. Consequently, we developed a GP guideline to...

OBJECTIVE Organophosphate (OP) insecticides continue to be used to control insect pests. Acute and chronic exposures to OP insecticides have been documented to cause adverse health effects, but few OP-adducted proteins have been correlated with these illnesses at the molecular level. Our aim was to review the literature covering the current state of the art in mass spectrometry (MS) used to ide...

Peter Sokol-Hessner, Colin F. Camerer, and Elizabeth A. Phelps Division of the Humanities and Social Sciences (HSS), California Institute of Technology, Division of the Humanities and Social Sciences (HSS) and Computational and Neural Systems (CNS), California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA, and Department of Psychology, New York University, 6 Washing...

Congenital Mullerian abnormalities, particularly the septate uterus, may result in recurrent abortion, premature labor and infertility. The purpose of this study is to report the surgical and reproductive outcome in two groups of patients who underwent hysteroscopic metroplasty (HMP). Between Aug. 1993 and March 1998,76 women underwent HMP in Shiraz University of Medical Sciences' affiliat...