Cross, Collin

Frerot, H., Petit, C., Lefebvre, C., Gruber, W., Collin, C., and Escarre, J., 2003, Zinc and cadmium accumulation in controlled crosses between metallicolous and nonmetalbcolous populations of Thlaspi caerulescens (Brassicaceae), New Phytol. 157 643-648. 

Unlike capillary electrophoresis, wherein absorbance detection is probably the most commonly utilized technique, absorbance detection on lab-on-a-chip devices has seen only a handful of applications. This can be attributed to the extremely small microchannel depths evident on microchip devices, which are typically on the order of 10 pm. These extremely small channel depths result in absorbance pathlengths that seriously limit the sensitivity of absorbance-based techniques. The Collins group has shown, however, that by capitalizing on low conductivity non-aqueous buffer systems, microchannel depths can be increased to as much as 100 pm without seeing detrimental Joule heating effects that would otherwise compromise separation efficiencies in such a large cross-sectional microchannel [38],... 

Catalysts and their effects on chemical reactions aid in efficiency, effectiveness and selectivity. A recent example of current research is redox and ligand exchange reactions of the oxygenation catalyst (N,N -bis(salicylidene)ethylenediaminato)co-balt(II), Co(SALEN)2 (below), and its one-electron oxidation product, Co(salen) 2-These were investigated in DMF, pyridine, and mixtures of these solvents. Solvent effects on the potentials, the thermodynamics of cross reactions, and the distribution of Co(II) and Co(III) species as a function of the solvent composition are important considerations (Eichhorn, 1997). The results in these solvents should be compared with other work with catalysts using more environmentally benign media (Collins et al., 1998). 

In the limit as ftact the rate of reaction of encounter pairs is very fast. The Collins and Kimball [4] expression, eqn. (25), reduces to the Smoluchowski rate coefficient, eqn. (19). Naqvi et al. [38a] have pointed out that this is not strictly correct within the limits of the classical picture of a random walk with finite jump size and times. They note the first jump of the random walk occurs at a finite rate, so that both diffusion and crossing of the encounter surface leads to finite rate of reaction. Consequently, they imply that the ratio kactj TxRD cannot be much larger than 10 (when the mean jump distance is comparable with the root mean square jump distance and both are approximately 0.05 nm). Practically, this means that the Reii of eqn. (27) is within 10% of R, which will be experimentally undetectable. A more severe criticism notes that the diffusion equation is not valid for times when only several jumps have occurred, as Naqvi et al. [38b] have acknowledged (typically several picoseconds in mobile solvents). This is discussed in Sect. 6.8, Chap. 8 Sect 2.1 and Chaps. 11 and 12. Their comments, though interesting, are hardly pertinent, because chemical reactions cannot occur at infinite rates (see Chap. 8 Sect. 2.4). The limit kact °°is usually taken for operational convenience. 

Fig. 9.23 Cross-section of a SAFT hydrogen-nickel battery, (By permission of Academic Press S. Font and G. Goulard. Power Sources 5, ed, D. H. Collins, 1975, p. 334.)...

Structure identification, quantifying relative cage occupancies. 1II NMR has been used for ethane, propane, and isobutane hydrates (Davidson et al., 1977 Garg et al., 1977), while 2H, 19F, 31P, and 77 Se NMR have been used for several si guests (Collins et al., 1990). 13C cross-polarization and magic angle spinning (MAS) NMR techniques have been applied to study hydrates of carbon dioxide, methane, and propane (Ripmeester and Ratcliffe, 1988, 1999 Wilson et al., 2002 Kini et al., 2004). 

Concerted evolution apparently operates among neodermatan ribosomal operons (Collins and Cunningham, 2000). However, intraspecific and intra-individual variation is common in neodermatans and other eukaryotes, especially in spacers, and indicates that the force of concerted evolution cannot completely overcome contrary influences. Such influences include the effects of replication slippage and unequal crossing over, both of which can occur in regions of simple sequence, which is abundant in eukaryotic... 

Prostaglandin E1 Liple Green Cross IV Vasodilator Marketed in Japan Collins-Gold et al. (1990) Yamaguchi et al. (1994)... 

AM Collins, C Maslin, RJ Davies. Scale-up of a chiral resolution using cross-linked enzyme crystals. Org Process Res Dev 2 400-406, 1998. 

Bhattacharjee, A.K., Opal, S.M., Palardy, J.E., Drabick, J.J., Collins, H., Taylor, R., Cotton, A., Cross, A. Affinity-purified Escherichia coli J5 lipopolysaccharide-specific IgG protects neutropenic rats against gram negative bacterial sepsis. J Infect Dis 170 (1994) 622-629. 

Collins, H.H., Cross, A.S., Dobeck, A., Opal, S.M., McClain, J.B., Sadoff, J.C. Oral ciprofloxacin and monoclonal antibody to lipopolysaccharide protect leukopenic rats from lethal infection with Pseudomonas aeruginosa, J Infect Dis 159 (1989) 1073-1082. 

Stephan Courtois, Qui savait quoi L extermination des juifs 1941-1944, Editions la Decouverte, Paris 1987 Malachia de Cristoforis, Etude pratique sur la cremation, Imprimerie Treves Freres, Milan 1890 Collin Cross, Adolf Hitler, Hodder and Stoughton, London 1973... 

Collins, A. M. Maslin, C. Davies, R. J., Scale-Up of a Chiral Resolution Using Cross-Linked Enzyme Crystals Org. Process Res. Dev 1998, 2, 400. 

In the frame of a medicinal chemistry program at Merck Sharp Dohme Ltd, Collins and co-workers reported successful Negishi cross-coupling reaction of 3-aryl-7-bromo-6-[( 1 -methyl-1/7-1,2,4-triazol-5-yl)methoxy][ 1,2,4]triazolo[4,3-/ pyridazines (63) with aliphatic organozinc reagents [35]. 

Bowling, M.B., Yemm, R.S., Belk, K.E., Scanga, J.A., Sofos, J.N., and Smith, G.C. 2006. An evaluation of central nervous system cross-contamination due to carcass splitting in commercial beef packing plants. Unpublished data. Center for Red Meat Safety, Colorado State University, Fort Collins, CO. 

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