We found no clear relationship between decomposition rate and either log
diameter or the nature of the disturbance event (logging or wildfire). We showed that models developed without a consideration of the effects of log fragmentation imply unrealistically slow decomposition rates. Our derived first-order decomposition rate constant (k) is 0.0085. This suggests that E. obliqua CWD in Tasmania’s southern forests decomposes very slowly in comparison with CWD decomposition rates reported from most other parts of the world. We intend to apply our findings to the task of modelling CWD dynamics for informing forest management. (C) 2008 Elsevier B.V. All rights reserved.”
“A straightforward and highly efficient procedure has been described Selleck AG-881 CX-6258 for the synthesis of fluorine containing 4-aryl [1,2,3,4]
tetrazolo [1,5-a] [1,8] naphthyridines 2 by the reaction of 3-aryl-2-chloro-1,8-naphthyridines 1 with sodium azide in gl acetic acid under microwave irradiation. The structural assignment of compounds 2 were based on their elemental analyses and spectral (IR, (1)H, NMR and MS) data.”
“TlyA proteins belong to 2′-O-methyltransferases. Methylation is a common posttranscriptional RNA modification. The Campylobacter jejuni Cj0588 protein belongs to the TlyA(I) protein family and is a rRNA methyltransferase. Methylation of ribosomal RNA catalyzed by Cj0588 appears to have an impact on the biology of the cell. Presence of the cj0588 gene in bacteria appears to be important for ribosome stability and virulence properties. Absence of the Cj0588 protein causes accumulation of the 50S ribosomal subunits, reduction in the amount of functional 70S ribosomes and confers increase resistance to capreomycin. (C) 2014 Elsevier Inc. All rights reserved.”
“Characteristics
of dynamical systems are often estimated to describe physiological processes. For instance, Lyapunov exponents have been determined to assess the stability of the cardio-vascular system, respiration, and, more recently, human gait and posture. However, the systematic CBL0137 evaluation of the accuracy and precision of these estimates is problematic because the proper values of the characteristics are typically unknown. We fill this void with a set of standardized time series with well-defined dynamical characteristics that serve as a benchmark. Estimates ought to match these characteristics, at least to good approximation. We outline a procedure to employ this generic benchmark test and illustrate its capacity by examining methods for estimating the maximum Lyapunov exponent. In particular, we discuss algorithms by Wolf and co-workers and by Rosenstein and co-workers and evaluate their performances as a function of signal length and signal-to-noise ratio. In all scenarios, the precision of Rosenstein’s algorithm was found to be equal to or greater than Wolf’s algorithm. The latter, however, appeared more accurate if reasonably large signal lengths are available and noise levels are sufficiently low.