ABSTRACT
The measurement of the coherence characteristics of the speckles generated by an optically smoothed laser source is investigated. We present a new method that can be used for every kind of smoothing technique. A modified Mach-Zehnder interferometer allows us to measure both the lifetime and the spatial transverse size of the hot spots generated by a broadband and transverse multimode source. Experimental results agree well with theoretical predictions.
ABSTRACT
The metabolism of glucose and palmitate by new born rat heart cell in tissue culture was investigated to ascertain the usefulness of this model system for metabolic studies. Heart cells in culture oxidize palmitate at a rate which is close to the rate reported in vivo. The fate of glucose is shown to differ from in vivo. High rates of lactate release are observed although there are many evidences that cells are not hypoxic. This impaired regulation is likely due to an impaired uptake of glucose.
