The present invention relates to specific novel tungsten and molybdenum compoundsto the use thereof for the deposition of tungsten- or molybdenum-containing layers by means of chemical vapour deposition, and to the tungsten- or molybdenum-containing layers produced by this process. An upstream brake roll and a downstream pull roll control web tension within the decurler apparatus and independent decurler rolls are provided for removing up-curl and down-curl. , a low crystalline or non-crystalline aliphatic polyester, and a block copolymer or a mixture the main component of which is an aliphatic polyester and which comprises a high-melting component and a low-melting component. The thin extension has a bottom surface which is offset from the bottom surface of the bonding region toward the top surface of the bonding region. In some embodiments, each mode function may be further analyzed andor processed to determine various physiological data corresponding to blood flow in the patient. A single linear scan of the rolling hash values is used to produce both similarity search values and boundaries of the digest blocks of the chunk.