BACKGROUND Ideal bowel preparation regimen for a suitable colonoscopy should be safe, and well tolerated, and should rapidly clear gastrointestinal tract. Soluble polyethylene glycol (PEG) is the most common cleansing drug and Senna or C-Lax (Cassia angustifolia Vahl) is an alternative herbal one. This study was designed to compare the efficacy of PEG and C-lax in bowel preparation. METHODS In ...

The floppy eyelid syndrome (FES) was first described in middle aged, obese men. In later descriptions, age and sex were not specifically mentioned. Associations of FES with various other syndromes have been described. The authors question whether all these cases represent the same, single, syndrome. They suggest that a clinical picture similar to FES may occur in lax upper eyelids of any cause....

A Gentzen sequent calculus for Lax Logic is presented, the proofs in which naturally correspond in a 1–1 way with the normal natural deductions for the logic. The propositional fragment of this calculus is then used a basis for another calculus, one which uses a history mechanism in order to give a decision procedure for propositional Lax Logic.

A covariant approach to the conformal property associated with Moyal-Lax operators is given. By identifying the conformal covariance with the second Gelfand-Dickey flow, we covariantize Moyal-Lax operators to construct the primary fields of one-parameter deformation of classical W -algebras. PACS: 02.30.Ik; 11.10.Ef; 02.20.Tw