Osmotic pressure technique has been employed to investigate the polymerization of bovine cw,-casein B under different experimental conditions. Results at neutral pH indicate that the polymerization of a,-casein B depends much more on ionic strength than on temperature. The number average molecular weight of a,-casein B in 0.01 M KCI, pH 7, at 20” was found to be 29,400 which corresponds to the ...

A derivation of the Dirac equation in ‘3 + 1’ dimensions is presented based on a master equation approach originally developed for the ‘1+ 1’ problem by McKeon and Ord. The method of derivation presented here suggests a mechanism by which the work of Knuth and Bahrenyi on causal sets may be extended to a derivation of the Dirac equation in the context of an inference problem.

Measurements in atmospheric science sometimes determine universal functions, but more commonly data are collected in the form of case studies. Models are conceptual constructs that can be used to make predictions about the outcomes of measurements. Hypotheses can be expressed in terms of model results, and the best use of measurements is to falsify such hypotheses. Tuning of models should be av...

We construct a rich dataset covering 47 developing countries over the years 1990-2007, combining several micro and macro level data sources to explore the link between political factors and body mass index (BMI). We implement a heteroskedastic generalized ordered logit model allowing for different covariate effects across the BMI distribution and accounting for the unequal BMI dispersion by geo...

Purified threonine deaminase of Salmonella typhimurium was found to be monodisperse and to have a molecular weight of 194,000. The protein, in 6 M guanidine HCI and 0.1 M P-mercaptoethanol, dissociates into polypeptide chains of molecular weight 48,500. Tryptic peptide analysis implies that the four component chains of the native enzyme are of identical amino acid sequence. L-Isoleucine and L-v...

The multimodel ensemble exercise performed within the HTAP project context (Fiore et al., 2009) is used here as an example of how a pre-inspection, diagnosis and selection of an ensemble, can produce more reliable results. The procedure is contrasted with the often-used practice of simply averaging model simulations, assuming different models produce independent results, and using the diversity...