A three-month study evaluated composting of cross laminated timber (CLT) sawdust amended with 10% and 20% chicken litter. Moisture was provided by rainwater or deionized water depending on the precipitation. The contents in the containers were mixed once or twice a week for aeration. Samples were collected at 0, 45, and 90-day intervals to measure weight loss, moisture content, pH, compost maturity, microbial count, and carbon-to-nitrogen ratio. Results indicated that composted CLT with 20% chicken litter had much higher weight reduction than others at day 45 and 90. Treatments with 10% and 20% chicken litter had a higher initial pH than controls and showed a slow increase near to neutral 7 by day 90. The germination rate of radish seeds to measure the compost maturity showed that composted CLT with 20% chicken litter had significantly higher germination rate than the others at days 45 and 90. A greenhouse study of composted material showed also that the 20% treatment could be used as soil amendment due to its excellent C/N ratio but appears to be unsuitable for container media. Longer composting time is suggested for CLT sawdust to be cured and used for potting media.

<p> An attempt is made to determine compositional and textural trends in the direction of sediment transport in middle Triassic cross-bedded sandstone samples collected from northeastern British Columbia. Petrographic measurements of textural and compositional properties were made and a multiple regression analysis was performed on 27 samples collected from a particular lithological unit. The general petrographic aspects of middle Triassic sandstones were investigated and are discussed.</p> / Thesis / Master of Science (MSc)

No description available.

Proteins exist in two conformers. The trans conformation is favored by the most of the amino acids. The proline residue due to its unique geometry has a high probability of being in the cis conformation. Thus the cis/trans isomerisation of the peptide bond preceding the proline residue becomes a rate limiting step in the folding and unfolding of the proteins. The enzymes which catalyze this rate limiting step were discovered by Fischer in porcine kidney and called as peptidyl prolyl cis trans isomerases (PPIases). There are four families of the PPIases. They are the parvulins, cyclophilins, FKBPs and trigger factors. All the four families catalyze a common reaction and the give rise to a stable trans product. We therefore wanted to analyse if cross complementation exists across the PPIase families. Our analysis has shown that the prokaryotic and the PPIase domain of the eukaryotic parvulins show a high structural similarity. The catalytic residues were found to be conserved across the genera. Our study has shown that a single domain 92 amino acid long prokaryotic parvulin PpiC from E.coli could complement for the function of Ess1 in Saacharomyces cerevisiae. We have also shown that under conditions of over expression the carboxy terminus of NifM from Azotobacter vinelandii could functionally replace Ess1 in S. cerevisiae. However the complete nifM was unable to do so. We have shown that the amino terminus of NifM acts as a regulatory unit not only for the PPIase activity of its carboxy terminus domain but also for the PPIase activity of PpiC and human Pin1. Using random mutagenesis we have identified the potential docking sites on amino terminus of NifM. These sites are defined as the residues which are responsible for the regulatory activity of NifM. Further we have found that FKBPs which show a high similarity with human Pin1 was unable to isomerise substrate specific to the parvulins. Our analysis has shown, the substrate binding pocket in FKBP is large due to its aromatic nature. Hence it is unable FKBPs to complement for the function of the parvulins.

No description available.

No description available.

No description available.

No description available.

No description available.

No description available.