mRNA from two molluscs, the snail Levantina hierosolima and the cuttlefish Sepia officinalis, and one arthropod, the scorpion Leiurus quinquestriatus, were found to contain species that hybridize with an oligodeoxynucleotide sequence corresponding to the six-amino-acid sequence His-His-Trp-His-Trp-His postulated to carry binuclear copper in arthropod haemocyanins. The duplexes formed between th...

In data warehouses measures are analyzed along different dimensions. Although the structures of these dimensions change over time, data warehouse tools currently in use are not able to deal with these modifications in a sophisticated way. In this paper we present a bitemporal extension of the COMET metamodel. This extension enables us to represent not only the valid time of structural modificat...

Apraxia is a symptom on the border between cognition and motor control. It is predominantly caused by left brain damage and frequently accompanied by aphasia. Theories of apraxia have been dominated by a model of the conversion of mental images into motor commands proposed more than 100 years ago by the German psychiatrist Hugo Liepmann and revived for modern cognitive neurology by Norman Gesch...

Apraxia is a symptom on the border between cognition and motor control. It is predominantly caused by left brain damage and frequently accompanied by aphasia. Theories of apraxia have been dominated by a model of the conversion of mental images into motor commands proposed more than 100 years ago by the German psychiatrist Hugo Liepmann and revived for modern cognitive neurology by Norman Gesch...

Two new hydrazone compounds, 4-formylimidazole-4-hydroxybenzhydrazone dihydrate (1) and 2-nitrobenzaldehyde-2-furan formylhydrazone (2), were synthesized via the classical synthesis method. Their structure was determined via elemental analysis and X-ray single crystal diffraction analysis. Compound 1 crystallizes in triclinic, space group P-1 with a = 7.0321(14) Å, b = 7.3723(15) Å, c = 13.008(...

the present research investigated the effect of self-regulatory approach (with two components of self-checking and self-efficacy) on pre-intermediate iranian learners' lexical segmentation in listening comprehension via authentic listening comprehension texts. to achieve this purpose, the investigators administered an oxford placement test (2007) to ninety-eight students of two girls’ priv...

This issue of Seminars in Cell and Developmental Biology contains a number of articles reviewing the cellular functions of proteoglycans. Proteoglycans are proteins, substituted with glycosaminoglycans (GAGs), that generally either decorate the cell membrane or fill the extracellular space. GAGs are linear polysaccharides consisting of a repeating disaccharide, generally of an acetylated amino ...