The initial step in biosynthesis of the O-antigen of Salmonella typhimurium is the formation of a lipid-linked derivative of galactose l-phosphate, according to the reaction UDP-galactose + P-lipid ti galactose-1 -PP-lipid + UMP. The enzyme activity has been detected in the cell envelope fraction of Citrobocter strain 139 (04, 5, 12) as well as in wild type S. typhimurium strain LT-2, but is mo...

and biosynthesis. Clin. Chem. 23, 5 (1977). Review. 2. Brown, J. R., Structure of bovine serum albumin. Fed. Proc. Fed. Am. Soc. Exp. Biol. 34, 591 (1975). Abstract 2105. 3. Weijers, R. N. M., Thesis, University of Utrecht, The Netherlands, 1971. 4. Weijers, R., Hagel, P., Das, B. ., and van der Meer, C., Tryptic peptides from rabbit and bovine albumin enhancing the effect of bradykinin. Biochi...

MENT OF OBSTETRIC PROBLEMS. Edited by T. Barnett and J. J. Foley. (Pp. xiii+ 188; illustrated. 50s.) Oxford: Pcrgamon Press, 1963. THIS is the transcript of proceedings at the first Obstetric Coonference held under the auspices of the South-WVestern Obstetrical and Gv-nacological Society in Portsmouth in November, 1961. There were five sessions, devoted to the very important practical subjects ...

39 Dan graduated from Hope College in May 2001 with a Bachelor of Science in Physics. This research was begun in the summer of his sophomore years as part of a NSF Research Experience for Undergraduates and was independently continued in his senior year. Dan is currently attending the graduate program in acoustics at the Pennsylvania Sate University, and is working towards his Ph.D. In his free...

The interpretation of modified PPs, like one meter behind the desk, far outside the village, or right under the lamp has never received much attention in the literature about prepositions. However, as this paper shows, the modification of PPs presents an intriguing problem for a compositional semantics of PPs. This problem can be solved when the PP is interpreted, not as a set of points or mere...

Findings from recent eye-tracking studies suggest that adults prefer to rely more on recently seen events than possible future events during sentence comprehension: When the verb in an NP1-VERB-ADV-NP2 sentence was referentially ambiguous between a recent action and an equally possible future action, adults fixated the target of the recent action more often than the not-yet-acted upon object (K...

We present a fourth-order accurate algorithm for solving Poisson’s equation, the heat equation, and the advection-diffusion equation on a hierarchy of block-structured, adaptively refined grids. For spatial discretization, finite-volume stencils are derived for the divergence operator and Laplacian operator in the context of structured adaptive mesh refinement and a variety of boundary conditio...

Recently a time-reversal mirror ~or phase-conjugate array! was demonstrated experimentally in the ocean that spatially and temporally refocused an incident acoustic field back to the original position of the probe source @Kuperman et al., J. Acoust. Soc. Am. 103, 25–40 ~1998!#. Here this waveguide time-reversal mirror technique is extended to refocus at ranges other than that of the probe sourc...

a fourth-generation ziegler-natta catalyst was prepared to synthesize polypropylene (pp), which was stabilized by in situ polymerization employing lignin as antioxidant. the antioxidant properties of lignin were compared with those of the commercial antioxidant irganox 1010. the presence of lignin in the reaction medium slightly decreased the catalytic activity of the reaction. the isotacticity...