Good, Robert

Zincon disodium salt (o-[l-(2-bydroxy-5-sulfo)-3-pbenyl-5-formazono]-benzoic acid di-Na salt) [135-52-4, 56484-13-0] M 484.4, m -250-260 (dec). Zincon soln is prepared by dissolving 0.13g of the powder in aqueous N NaOH (2mL diluted to lOOmL with H2O). This gives a deep red colour which is stable for one week. It is a good reagent for zinc ions but also forms stable complexes with transition metal ions. [UV-VIS Bush and Yoe Anal Chem 26 1345 1954 Hunter and Roberts J Chem Soc 820 1941 Platte and Marcy Anal Chem 31 1226 1959] The free acid has been recrystd from dilute H2SO4. [Fichter and Scheiss Chem Ber 33 751 1900.]... 

I was indeed fortunate to have grown to chemical maturity under Sir Robert Robinson, and in an environment where heterocyclic chemistry was certainly not neglected. This being so, it is natural that I feel the dissemination and rationalization of knowledge in heterocyclic chemistry to be of vital importance. Recently several good heterocyclic texts have appeared, but a need exists for a medium in which current advances in the subject can rapidly be presented to a wide audience. The present series aims to make available to graduate students and research workers in academic and industrial laboratories up-to-date reviews of a wide variety of heterocyclic topics. 

Minchener el al. report that the bubble phase of atmospheric fluidised bed combustion has a pOi in the range 2 x 10 to 2 x 10 Combustion in the dense phase is sub-stoichiometric, with the /Oj as low as 10 and SO2 and SO3 present in the range 500-5 000ppm. Low Cr-Mo steels show heavy scaling in these conditions, whereas 9-12% Cr steels show good resistance to sulphidation up to 650°C. Roberts et however, report that for pressurised fluidised-bed combustion, ferritic steels at or below 9% Cr show heavy general corrosion above 540-560°C. 

The difference in sulfonation behavior between a-olefins (AO) and internal olefins (IO) has been a longstanding problem [14] and the literature is replete with earlier explanations [14,15] and practical solutions [16-20] to the problem of IO sulfonation. In their studies of IO sulfonation chemistry, Stapersma and colleagues [4], Radici et al. [21], Yoshimura et al. [22,23], and Roberts and Jackson [24] identified the origins of the poor sulfonatability of IO, and the process modifications required to produce good-quality IO sulfonate. 

Roberts et al. [74] took advantage of the rapid and selective p-scissions of phosphoranyl radicals, to develop a radical chain desulfurization affording new substituted a-alkyl acrylates in good to moderate yields (Scheme 37). 

During chemical and physical transformations, any of the four variables in the ideal gas equation P, V, n, T) may change, and any of them may remain constant. The experiments carried out by Robert Boyle are a good example. Boyle worked with a fixed amount of air trapped in a glass tube, so the number of moles of gas remained the same during his experiments. In other words, n was held constant. Boyle also worked at only one temperature, so T remained constant. Example applies the ideal gas equation to this situation. 

Hermes Trismegistus. Two more sermons of Thrice-Greatest Hermes In God alone is good, and Elsewhere nowhere, [translated by G. R. S. Mead], TheosophRev 34, no. 202 (Jun 1904) 343-348. Translated by George Robert Stow Mead. 

That spring, Perkin mailed a precious sample of his purple to a Scottish dye firm. After exposing the sample to sunlight, the company s owner, Robert Pullar, wrote back that Perkin s mauve had kept its color better than any other lilac on the market. If your discovery does not make the goods too expensive, it is decidedly one of the most valuable that has come out for a very long time. This colour is one which has been very much wanted in all classes of goods, and could not be obtained fast on silks, and only at great expense on cotton yarns. ... 

Herbert L. Needleman. Clair Patterson and Robert Kehoe Two Views of Lead Toxicity. Environmental Research. 78 (Aug. 1998) 79-85. A good summary of Patterson versus Kehoe. 

Robert Richards But I mean a good knife , as opposed to just an OK knife , but he might be a very nice person. 

The number of mobile holes is equal to the number of impurity Ni2+ ions, and so the fraction c in the Heikes equation is equal to x in LaNi,Coi -,(+. In accord with the theory, the Seebeck coefficient, a, is positive and greatest at low values of x and decreases as x increase (Fig. 1.12). Substituting a value of c = 0.02 into the equation yields a value of a = +335 pV K-1, in good agreement with the experimental value of 360 pV K-1 (Robert el al., 2006). Note that the above example also shows that an experimentally determined value of the Seebeck coefficient can be used to estimate the concentration of impurity defects in a doped oxide. 

We thank our colleagues Osamu Terasaki, Edward Boyes, Paul Midgley, Robert Raja, Frank Gooding, Leland Hanna, Kostantinos Kourtakis, Gopinath Sankar, Matthew Weyland, and Brian Johnson for their friendly cooperation. 

Organic Chemistry A Brief Introduction by Robert J. Ouellette, Prentice Hall, New Jersey, 1998, contains a super introduction to the history of DNA and heredity. Stephen Rose s now classic book The Chemistry of Life, Penguin, Harmondsworth, 1972, goes into more depth, and includes a good discussion of H-bonds in nature and DNA. The sites http //www.dna50.org.uk/index.asp and http //www.nature.com/ nature/dna50/ have good pictures and links. 

Aqueous Acid-Base Equilibria and Titrations, Robert de Levie, Oxford University Press, Oxford, 1999, is a good resource, whose scope extends far beyond this book. Its particular emphasis is speciation analyses, which are discussed in an overtly mathematical way. The maths should be readily followed by anyone acquainted with elementary algebra. Water Chemistry, by Mark M. Benjamin, McGraw Hill International Edition, New York, 2002, is a longer book and covers the same material as de Levie but in substantially greater depth. 

Robert J. Hunter has written two good books on colloid science the magisterial Foundations of Colloid Science (second edition), Oxford University Press, Oxford, 2000, is surely the benchmark text on this topic, but it is not cheap. Its smaller offspring is Introduction to Modem Colloid Science, Oxford University Press, Oxford, 1993. This latter text loses none of the rigour but is much shorter and cheaper. 

The disappearance of nitroxides may also occur by unimolecular reactions. A good example is found with t-butoxy t-butyl nitroxide, known to be a relatively short-lived species, for which three fragmentation pathways are possible (1 la,b,c). Loss of butoxyl radicals (path a) was shown to be reversible (Perkins and Roberts, 1974), and, in the absence of any substrate which... 

Although Robert Lespieau became best known in France for a laboratory school that focused on reaction mechanisms in organic chemistry, he first gained international attention in another area. Van tHoff spoke at the third Congress of Dutch Scientists and Doctors, in Utrecht in 1891, on recent accomplishments in physical chemistry, putting the young Lespieau in very good company. 

Illustratively, all fifty states currently have programs reimbursing poor people for the cost of surgery to implant Norplant. See, Roberts, Dorothy E. (1995). The Only Good Poor Woman Unconstitutional Conditions and Welfare. 72... 

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