Despite significant theoretical work over the past decade, the phenomenon of trust and the process of its development in managerial relationships remain elusive in theory and practice. This paper revisits theories that frame trust development in order to explore the development of trust in the specific social context of managerial relationships. Managerial relationships are often characterised by politics and the pursuit of hidden agendas and self‐interest. Competing perspectives and personal motivations can conspire to render even the most innocent of acts subject to scrutiny and suspicion. In these senses, high levels of trust are not commensurate with ideal conditions for managerial effectiveness. Examines the realistic possibilities for trust development set in the context of managerial relationships, and in the process of this analysis, creates a set of propositions that could inform further theory development and empirical investigation of the area.
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To date matrix-assisted laser desorption/ionisation mass spectrometry imaging (MALDI-MSI) analysis has been largely concerned with mapping the distribution of known analytes in tissues. An important step in the progression of its applications is the determination of unknown variants for metabolite and protein profiling in both clinical studies and studies of disease. Principal component analysis (PCA) is a statistical approach which can be used as a means of determining latent variables in multivariate data sets. In the work reported here, PCA, in both unsupervised and supervised modes, has been used to differentiate brain regions based on their lipid composition determined by MALDI-MSI. PCA has been shown to be useful in the determination of hidden variables between spectra taken from six regions of brain tissue. It is possible to identify ions of interest from the loadings plot which are likely to be more prominent in the different regions of the brain and thus differentiating between white and grey matter. It is also possible to distinguish between the grey Cerebellar Cortex and the Hippocampal formation, due to the grey Cerebellar Cortex having a positive PC2 and the Hippocampal formation having a negative PC2 score; this is only possible in supervised PCA with this data set because with unsupervised PCA the two regions overlap.
A c-type cytochrome from Shewanella oneidensis MR-1, containing eight hemes, has been previously designated as an octaheme tetrathionate reductase (OTR). The structure of OTR revealed that the active site contains an unusual lysine-ligated heme, despite the presence of a CXXCH motif in the sequence that would predict histidine ligation. This lysine ligation has been previously observed only in the pentaheme nitrite reductases, suggesting that OTR may have a possible role in nitrite reduction. We have now shown that OTR is an efficient nitrite and hydroxylamine reductase and that ammonium ion is the product. These results indicate that OTR may have a role in the biological nitrogen cycle.
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