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Mostrando 13-16 de 16 artigos, teses e dissertações.
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13. A joint hazard and time scaling model to compare survival curves.
To provide a more general method for comparing survival experience, we propose a model that independently scales both hazard and time dimensions. To test the curve shape similarity of two time-dependent hazards, h1(t) and h2(t), we apply the proposed hazard relationship, h12(tKt)/ h1(t) = Kh, to h1. This relationship doubly scales h1 by the constant hazard a
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14. Development of an arabinose-fermenting Zymomonas mobilis strain by metabolic pathway engineering.
The substrate fermentation range of the ethanologenic bacterium Zymomonas mobilis was expanded to include the pentose sugar, L-arabinose, which is commonly found in agricultural residues and other lignocellulosic biomass. Five genes, encoding L-arabinose isomerase (araA), L-ribulokinase (araB), L-ribulose-5-phosphate-4-epimerase (araD), transaldolase (talB),
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15. A tyrosine kinase profile of prostate carcinoma.
Tyrosine kinases play central roles in the growth and differentiation of normal and tumor cells. In this study, we have analyzed the general tyrosine kinase expression profile of a prostate carcinoma (PCA) xenograft, CWR22. We describe here an improved reverse transcriptase-PCR approach that permits identification of nearly 40 different kinases in a single s
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16. Plasmid-Dependent Methylotrophy in Thermotolerant Bacillus methanolicus
Bacillus methanolicus can efficiently utilize methanol as a sole carbon source and has an optimum growth temperature of 50°C. With the exception of mannitol, no sugars have been reported to support rapid growth of this organism, which is classified as a restrictive methylotroph. Here we describe the DNA sequence and characterization of a 19,167-bp circular
American Society for Microbiology.