Lignin Depolymerization: A Comparison of Methods to Analyze Monomers and Oligomers.

Catalytic liquefaction of lignin is an attractive process to produce fuels and chemicals, but it forms a wide range of liquid products from monomers to oligomers. Oligomers represent an important fraction of the products and their analysis is complex. Therefore, rapid characterization methods are needed to screen liquefaction conditions based on the distribution in monomers and oligomers.

Codon and aminoacid usage patterns in mycobacteria.

The large number of organisms and of genes sequenced at the present time permits now to study molecular evolution in such lower clades as genera, species, and subspecies. Here, we focus our attention on the genus Mycobacterium, in which we examined codon and aminoacid usage in 13 species, and in 12 subspecies for a total of 8,836,513 codons from 26,755 sequences. Within the genus Mycobacterium, frequencies of codon and aminoacid usage correlate between species and between subspecies.

Systemic hyperthermia in the treatment of HIV-related disseminated Kaposi's sarcoma. Long-term follow-up of patients treated with low-flow extracorporeal perfusion hyperthermia.

Treatment of HIV and related malignancies with pharmacologic and biologic agents has not appreciably modified the course of disease. Immunologic impairment remains the critical factor in response. We report the long-term results of a single session of low-flow (0.