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The work of the International Committee on the Nomenclature of Ocean Bottom Features, and that of various national groups, is described. A list of approved terms of deep-sea features and their definitions is given. In order to avoid confusion, it is hoped that these terms will be used as widely as possible.
AIRCRAFT Air Max 90 Em producer Boeing has decided that the primary structure of its new 7E7 ‘Dreamliner’ will be built mostly from composite materials. The company says this will be the first commercial jet to have the majority of its primary structure (including the wing and fuselage) made of composites.
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The use of X-ray absorption spectroscopy (XAS) to characterize the local environment of “spectroscopically quiet” metals in metalloproteins is reviewed, with Nike Air Max 1 Og an emphasis on studies of Cu(I) and Zn(II). Both the advantages and the weaknesses of X-ray absorption are discussed, with examples taken from the recent literature.
The reaction between NEM and the two proteins lysozyme and ribonuclease A results, under certain experimental conditions, in the alkylation of ϵ-amino and imidazole groups. The extent of reaction may be determined by amino acid analysis since the reaction products yield ninhydrin-positive zones.