Direct Analysis in Real Time (DART™) high-resolution Orbitrap™ mass spectrometry (HRMS) in combination with Raman microscopy was used for the detailed molecular level characterization of explosives including not only the charge but also the complex matrix of binders, plasticizers, polymers, and other possible organic additives. A total of 15 defused military weapons including grenades, mines, r...

Mass spectrometry was performed on self-assembled monolayers (SAMs) of dodecanethiol on gold using the new direct analysis in real time (DART) ionization technique. Observed peaks for the SAMs included monomers, dimers, and trimers of the SAM molecules, with the dimer and trimer relative peak heights enhanced as compared to the spectra for neat dodecanethiol. The possibility that the observed p...

The applicability of a new mass spectrometric technique, DART (direct analysis in real time) has been studied in the analysis of the calli of Taxus wallichiana. The intact callus samples were directly analyzed by holding them in the gap between the DART source and mass spectrometer for measurements. Five C-14 oxygenated taxoids were characterized from the analysis of the calli of the Taxus wall...

The DART Model of the Kiel Institute for World Economics (IfW) is a recursive dynamic computable general equilibrium model of the world economy, covering multiple sectors and regions. It is designed for the analysis of international climate policies. At present, the most important applications are the implementation of the Kyoto Protocol either trough unilateral action or through emissions trad...

This paper describes an extensible core software element of a distributed, peer-to-peer system, which provides several facilities in order to help the implementation of collaborative, Web-based, distributed information storing and retrieval applications based on a decentralized P2P model. Moreover, after an architectural introduction of the core distributed software module, the Core Node, this ...

How does one “throw localized darts,” that is, place random points in a subregion? It is inefficient just to find points in a larger region, only to check painstakingly every generated point for subregion membership. We describe herein several means for efficient, localized dart-throwing, under the constraint that a subregion’s points be entirely consistent with a restriction of any larger gene...

The P4–structure of a graph G is a hypergraph H on the same vertex set such that four vertices form a hyperedge in H whenever they induce a P4 in G. We present a constructive algorithm which tests in polynomial time whether a given 4–uniform hypergraph is the P4–structure of a claw–free graph and of (banner,chair,dart)–free graphs. The algorithm relies on new structural results for (banner,chai...

DART (Digital Anthropological Resources for Teaching) is a major project examining ways in which the use of online learning activities and repositories can enhance the teaching of anthropology and, by extension, other disciplines. This paper reports on one strand of DART activity, the development of customisable learning activities that can be repurposed for use in multiple contexts. Three exam...

An Indian lad aged 14 years, who had been hit in the right eye by a dart from an air pistol, was first seen 24 hours later. A trivial puncture wound was evident just above and medial to the inner canthus of the right eye. The visual acuity was 6/18 and there was slightest oedema of the upper lid. X-ray showed a somewhat alarming picture (Figs 1 and 2). The large dart appeared to be lodged very ...