The hydroxypropionate pathway of CO2fixation: Fait accompli: Fig. 1.

Increasing cognitive dissonance by a fait accompli.

A RECENT theory by Festinger (1957) attempts to state the conditions under which discrepancies between cognitions produce "cognitive dissonance," a state of tension that motivates the individual to reduce or eliminate the discrepancies. One of the conditions that may be necessary for the creation of cognitive dissonance is that there be some element of volition. The theory states, for example, ...

Fig. 1

Protocol for the Femoroacetabular Impingement Trial (FAIT)

AIMS Femoroacetabular Junction Impingement (FAI) describes abnormalities in the shape of the femoral head-neck junction, or abnormalities in the orientation of the acetabulum. In the short term, FAI can give rise to pain and disability, and in the long-term it significantly increases the risk of developing osteoarthritis. The Femoroacetabular Impingement Trial (FAIT) aims to determine whether o...

Fig. 1: Mpeg-4 Coding Scheme

A programmable processor architecture for MPEG-4 video is proposed, that can serve as a coprocessor module in MPEG-4 decoder systems. It consists of a 64-bit dual-issue VLIW macroblock engine, a separate RISC core for bitstream parsing and system processing, and an autonomous I/O processor. A separate DSP is used for MPEG audio support. The architecture is fully programmable and supports parall...

Comment on "A 3-hydroxypropionate/4-hydroxybutyrate autotrophic carbon dioxide assimilation pathway in Archaea".

Berg et al. (Reports, 14 December 2007, p. 1782) reported the discovery of an autotrophic carbon dioxide-fixation pathway in Archaea and implicated a substantial role of this pathway in global carbon cycling based on sequence analysis of Global Ocean Sampling data. We question the validity of the latter claim.