Two dimensional electronic spectroscopy and transient grating measurements were performed, for the first time, on nitrogen-vacancy centers in diamond. These measurements reveal energy transfer and vibrational pathways with consequences for spin coherence.

With the rapid development of information concerning the isolation, identification, and physiological levels of corticosteroids, a relatively simple microchemical met,hod for their quantitative estimation appears ta be desirable. Since the known biologically active adrenal cortical hormones contain a primary cu-ketol function, an cr,@msaturated %-ketone group, or both, several methods based upo...

Rhizobacteria isolated from wild dipterocarp saplings in Central Kalimantan, Indonesia, were subjected to Salkowski's reagent test, which is often used in detecting indolic substances. Among 69 isolates grown in a low-nitrogen medium supplemented with L-tryptophan (TRP), culture fluids of 29 strains were positive to the test, in which 17 bacteria turned red and other 10 pink. All the red type r...

In Paper I (1) we have described the reaction of chymotrypsinogen with carbon disulfide and the preparation of a monosubstituted derivative in which the single a-amino group of the protein has been converted to a dithiocarbamate group. A study of the reaction of 0-methylisourea with chymotrypsinogen is reported in this paper. In 1935 Greenstein found that 0-methylisourea reacts with lysine to f...

With the rapid development of information concerning the isolation, identification, and physiological levels of corticosteroids, a relatively simple microchemical met,hod for their quantitative estimation appears ta be desirable. Since the known biologically active adrenal cortical hormones contain a primary cu-ketol function, an cr,@msaturated %-ketone group, or both, several methods based upo...

Complementing the demand for effective crime reduction measures are the increasing availability of commercial forensic "taggants", which may be used to physically mark an object in order to make it uniquely identifiable. This study explores the use of a novel "peptide coding" reagents to establish evidence of contact transfer during criminal activity. The reagent, containing a fluorophore dispe...