The aim of this paper is to explore modelling a more non standard interaction between a human and a database We try to equip the database with the capability of understand ing queries in natural language and answering them in a more intelligent manner than by mere yes no factual answers This capability of the database requires at least two compo nents First the database must possess a front end...

Labelled transition systems are useful for giving semantics to programming languages. Kok and Rutten have developed some theory to prove semantic models deened by means of labelled transition systems to be equal to other semantic models. Metric labelled transition systems are labelled transition systems with the conngurations and actions endowed with metrics. The additional metric structure all...

The stability of the commonly used red cell radio labels chromium-51, indium-(111 or 113m), and technetium-99m, within intact red cells and stroma and their distribution within the cell were compared in undamaged and heat damaged red cells in relation to the clinical use of heat damaged cells in the assessment of splenic function. Chromium-51 labelled haemoglobin both in undamaged and heat dama...

This paper contains a first step towards extending the Graph Minors Project of Robertson and Seymour to group-labelled graphs. For a finite abelian group Γ and Γ-labelled graph G, we describe the class of Γ-labelled graphs that do not contain a minor isomorphic to G.

Two players are independently placed on a commonly labelled network X: They cannot see each other but wish to meet in least expected time. We consider continuous and discrete versions, in which they may move at unit speed or between adjacent distinct nodes, respectively. There are two versions of the problem (asymmetric or symmetric) depending on whether or not we allow the players to use diier...

Absorption from wheat intrinsically and extrinsically labelled with 67Zn and extrinsically labelled with 65Zn was measured from 67Zn faecal excretion and 65Zn whole-body retention in rats. There were significant differences between the extrinsically- and intrinsically-labelled 67Zn (P < 0.001), but not between the extrinsically-labelled 65Zn and intrinsically-labelled 67Zn. The effect of chicke...

1. The fate of (+)-[U-(14)C]catechin and (+)-[ring A-(14)C]catechin has been studied in the guinea pig and rat. 2. (+)-[U-(14)C]Catechin was shown to give rise to labelled phenolic acids, labelled phenyl-gamma-valerolactones and (14)CO(2). 3. (+)-[ring A-(14)C]-Catechin did not give rise to labelled phenolic acids, but labelled phenyl-gamma-valerolactones were detected together with a higher pr...

1. The metabolism of an intravenous pulse dose of double-isotope-labelled cholecalciferol has been studied in control subjects with widely differing states of vitamin D nutrition and in patients with primary disorders of parathyroid function. 2. The formation of labelled 1,25-dihydroxy-cholecalciferol [1,25-(OH)2D3] and labelled 24,25-dihydroxycholecalciferol [24,25-(OH)2D3] has been related to...

The membrane-permeable fluorescein-labelled tyramine conjugate (acetylTyrFluo) was used to identify the proteins of normal human dermal fibroblasts most susceptible to oxidation by hydrogen peroxide [Van der Vlies, Wirtz and Pap (2001) Biochemistry 40, 7783-7788]. By exposing the cells to H(2)O(2) (0.1 mM for 10 min), TyrFluo was covalently linked to target proteins. TyrFluo-labelled and [(35)S...