Lars Kirkegaard B kdal Bent Bruun Kristensen The Maersk Mc-Kinney Moller Institute for Production Technology University of Southern Denmark/Odense University, DK-5230 Odense M, Denmark e-mail: flkb, [email protected] Abstract A whole is aggregated from parts, where a part can be aggregated itself or be atomic. The structure forms an aggregation (or part-whole) hierarchy. The whole can be...

The morphological evolution of bivalves is documented by a rich fossil record. It is believed that the shell shape and surface sculpture play an important role for the burrowing performance of endobenthic species. While detailed morphometric studies of bivalve shells have been done, there are almost no studies experimentally testing their dynamic properties. To investigate the functional morpho...

BACKGROUND Some studies showed that smoking follows an upward trend in Asian countries as compared with other countries. The purpose of this study was to examine the effect of cigarette smoking on cardiovascular diseases and risk factors of atherosclerosis in patients with hypertension. METHODS This study was conducted on 6123 men residing in central Iran (Isfahan and Markazi Provinces) that ...

Escherichia coli can overcome the toxicity of environmental cyanate by hydrolysis of cyanate to ammonia and bicarbonate. This reaction is catalyzed by the enzyme cyanase, encoded by the cynS gene. The nucleotide sequence of cynS has been reported (Sung, Y.-c., Anderson, P. M., and Fuchs, J. A. (1987) J. Bacteriol. 169, 5224-5230). The nucleotide sequence of the complete cyn operon has now been ...

Context. We present the compilation of Fifth Catalogue Nearby Stars (CNS5), based on astrometric and photometric data from Gaia EDR3 H IPPARCOS supplemented with parallaxes ground-based surveys carried out in infrared. Aims. The aim CNS5 is to provide most complete sample objects solar neighbourhood. For all known stars brown dwarfs 25 pc sphere around Sun, basic parameters are given. Furthermo...

OBJECTIVE To confirm and quantify any association between spironolactone and upper gastrointestinal bleeding and ulcers. DESIGN Population based case-control study. SETTING A primary care information database in the Netherlands. PARTICIPANTS All people on the database who were aged 18 or more between 1 January 1996 and 30 September 2003. Patients with a history of alcoholism or gastrointe...

These Comparative genomics and genomic tools have been used to identify virulence factors and genes involved in environmental persistence of pathogens. However, a major stumbling block in the genomics revolution has been the large number of genes with unknown function that have been identified in every organism sequenced to date. Over 1740 bacterial genome sequences are currently available in p...

We consider the following problem for oriented graphs and digraphs: Given a directed graphD, does it contain a subdivision of a prescribed digraph F? We give a number of examples of polynomial instances, several NP-completeness proofs as well as a number of conjectures and open problems. Key-words: NP-completeness, 2-linkage, flows, DAG and handle decompositions. ∗ Department of Mathematics and...