Logan ins

C. C. Addison and N. Logan, in The Chemistry of Dinitrogen Pentoxide Developments in Inorganic Nitrogen Chemistry, Ed. C. B. Coburn, Elsevier, Amsterdam, Chapter 2 (1973). 

Formation of p-Lactams, Peptides and Oligonucleotides. The intramolecular cyclization technology to form /8-lactams using DCC in the condensation reaction was used by Sheehan and Henery-Logan in the total synthesis of penicilline in 1957. They also found that N-trityl penicilloates are cyclized with diisopropylcarbodiimides. Other p-lactames, such as cephalothin lactone and (—)-thienamicin are similarly constructed. The latter synthesis proceeds in a stereospecific manner and DCC is used in combination with triethylamine to give a 93 % yield of the /3-lactam 661. 

War II, attempts were made in many laboratories to synthesize penicillin 19> 32. The first rational total synthesis of penicillin V was achieved by Sheehan and Henery-Logan in... 

The first reproducible procedure for the determination of hydroxyproline, published by Neuman and Logan in 1950, placed the study of... 

G. R. Massoumi, W.N. Leonard, PJ. Multz and L.R. Logan, in Positron Annihilation, eds L. Dorikens-Vanpraet, M. Dorikens and D. Segers (World Scientific, Singapore, 1989) p. 297. 

Catharanthus roseus (continued) -[ 0-methy I- C ] -6-epi-Hydroxy logan in (fed to intact plants)... 

Indeed, such trends are evident in many lake sediments, peats and ice cores which have prompted Renberg et a/.,(2001) to suggest that lead profiles may be used to identify the sediment/ice deposited dining the Roman and Medieval periods and in the post-1970 period independently of age estimation. Work by Yalcin and Wake (2001) also reflects how lands distant from the source can be polluted. Their analysis of a core from the Eclipse ice field near Mt. Logan in the Yukon shows an increase in the concentrations of sulphate and nitrate, i.e. acid rain, began in the 1940s and that the source of this pollution is industry in Eurasia, possibly in the former Soviet Union. 

McCoUum and Logan, Electrolytic Corrosion of Iron in Soils, Technical Paper No. 25, Bureau of Standards, Washiagton, D.C., 1913, p. 7. 

Logan, A., Corrosion Control in Tankers , Transactions of the Institute of Marine Engineers, No. 5 (1958)... 

Soil corrosion does not lend itself readily to direct study in the laboratory. However, indirect methods involving the action of differential aeration cells have yielded valuable information in comparing the probable corrosivities of different soils towards steel. The details of this technique were described by Denison , Ewing , Schwerdtfeger, and by Logan, Ewing and Denison ... 

Uncertainties in Photochemical Models. The ability of photochemical models to accurately predict HO concentrations is undoubtedly more reliable in clean vs. polluted air, since the number of processes that affect [HO ] and [H02 ] is much greater in the presence of NMHC. Logan et al (58) have obtained simplified equations for [HO ] and [HO2 ] for conditions where NMHC chemistry can be ignored. The equation for HO concentration is given in Equation E6. The first term in the numerator refers to the fraction of excited oxygen atoms formed in R1 that react to form HO J refers to the photodissociation of hydrogen peroxide to form 2 HO molecules other rate constants refer to numbered reactions above. 

We have previously examined the mutual dependence of [HO ] upon [NO,jj and [NMHC] as calculated by a combined clean/polluted air chemical mechanism (76), and extend those calculations here to the more modem CAL mechanism of Lurmann et al. (182). To do this we have combined the NO,/NMHC chemical reactions of the CAL mechanism with the methane chemistry of Logan et al. (58). The results of these calculations are shown as contour maps or isopleths for [O3], [HO ], and [HO2 ] in Figure 7. Figure 7a, for ozone, is similar to isopleths used to determine reductions in NMHC and/or... 

Photochemistry plays a significant role in nitrogen s atmospheric chemistry by producing reactive species (such as OH radicals). These radicals are primarily responsible for all atmospheric oxidations. However, since the photochemistry of the atmosphere is quite complex, it will not be dealt with in detail here. For an in-depth review on tropospheric photochemistry, the reader is referred to Logan et al. (1981), Finlayson-Pitts and Pitts (1986), Crutzen and Gidel (1983) or Crutzen (1988). 

Logan MR, Odemuyiwa SO, Moqbel R Understanding exocytosis in immune and inflammatory cells the molecular basis of mediator secretion. J Allergy Clin Immunol 2003 111 923-932. 

In this section, no attempt will be made to follow the modern classification system the reader is referred to the works ofBergey (Buchanan Gibbons 1974), Cowan and Steel (Cowan 1993) and Logan (1994) for an overview of classification. 

Sutton AM, Harvie A, Cockburn F, Farquharson J, Logan RW (1985) Copper defidency in preterm infants of very low birthweight. Four cases and a reference range for plasma copper. Arch Dis Childh 60 644-651. 

Logan, D., C. T. Baroczy, J. A. Landoni, and H. A. Morewitz, 1970, Effects of Velocity, Oxide Level, and Flow Transients on Boiling Initiation in Sodium, AI-AEC-12939 Rockwell Int., Canoga... 

Goodacre, R. Shann, B. Gilbert, R. J. Timmis, E. M. McGovern, A. C. Alsberg, B. K. Kell, D. B. Logan, N. A. Detection of the dipicolinic acid biomarker in Bacillus spores using Curie-point pyrolysis mass spectrometry and fourier transform infrared spectroscopy Anal. Chem. 2000,72,119-127. 

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