Phytoremediation effectiveness and remediation costs are driving factors of this project. Full utilization of plant resources after their being used for phytoremediation is an unsolved problem. GC/MS technique was used to investigate the volatiles of the flowers from Elsholtzia argyi (PFE1: Purple Flower Elsholtzia) and their variation (WFE: White Flower Elsholtzia), naturally growing in Pb/Zn ...

Short-term constituents of the secular variation, at inter-decadal (20–30 years) and sub-centennial (60–90 years) time scales, present in observatory data and main field models, are also found in the radial field evolution at core surface. The paper is focused on the sub-centennial constituent in the gufm1 model. Time–Longitude (t–λ) plots, covering the 400 years time span of the model, at vari...

We present Constituent Grammatical Evolution (CGE), a new evolutionary automatic programming algorithm that extends the standard Grammatical Evolution algorithm by incorporating the concepts of constituent genes and conditional behaviour-switching. CGE builds from elementary and more complex building blocks a control program which dictates the behaviour of an agent and it is applicable to the c...

Ahs t r ac t : This paper outl ines a theory of const i tuent coordination For l ,exicaI-Funetional Grammar. On this theory LFG's flat, unstructured nets are used as the functional representat ion of coordinate constructions, l"unction application is extended to sets by t rea t ing a set tbrmally am the general izat ion of its Functional clmnents. This causes properties a t t r ibuted external ...

It has been postulated that the prevalence of atopic diseases and their increase over time are associated with regional differences in diet and trends. The results of an ecological correlation study comparing the mean daily intake of selected dietary constituents and the prevalence of allergic sensitization in adults in Europe is presented. Prevalence data from the European Community Respirator...

Starting from the observation that colour charge is only well defined on gauge invariant states, we construct perturbatively gauge invariant, dynamical dressings for individual quarks. Explicit calculations show that an infra-red finite mass-shell renormalisation of the gauge invariant, dressed propagator is possible and, further, that operator product effects, which generate a running mass, ma...

In Optimality Theory (OT), recent work has been exploring the idea that the order of constituents in syntax is determined by alignment constraints, developed within the theory of Generalized Alignment (see McCarthy and Prince (1993)). Costa (1998) and Samek-Lodovici (1998) present general overviews, and both have specifically argued that OT analyses are superior to proposals expressed in terms ...

A number of coordinate constructions in natural languages conjoin sequences which do not appear to correspond to syntactic constituents in the traditional sense. One striking instance of the phenomenon is afforded by the "gapping" construction of English, of which the following sentence is a simple example: (1) Harry eats beans, and Fred, potatoes Since all theories agree that coordination must...

Analysis by Gas Chromatography and Gas Chromatography/Mass Spectrometry of the essential oils obtained from leaves of Echinodorus grandiflorus ("Chapéu de couro") from two different populations (Big Leaves and Small Leaves), collected monthly between September 1998 and December 1999 revealed 17 components. Phytol was the major constituent for both populations. The main sesquiterpene representat...

Photo-oxygenation of trans anethole (1), the main constituent of anise essential oil, using tetraphenylporphyrine (TPP) as a singlet oxygen sensitizer in chloroform gave 4-methoxybenzaldehyde (p-anisaldhyde) (2), 2-(4-methoxyphenyl)propan-2-ol (3) as well as erythro and threo 1-(4-methoxyphenyl)propane-1,2-diol (4a, 4b). The structures of the photo-oxygenation products were elucidated by spectr...