Sackville Memorial Hospital

John Snow was a physician and pioneering epidemiologist with two towering achievements from both fields: advancing the understanding of anaesthesia and explaining the spread of the disease cholera. Snow came from a working-class background and took up a medical apprenticeship in Newcastle upon Tyne at the age of 14, during which time he encountered the horrific effects of cholera in British cities. The particularly deadly 1830–1 cholera epidemic and the fact that its thousands of victims tended to be the poor, particularly influenced him. He moved to London in 1836 to take up work as a physician and, on again encountering cholera, became a sceptic of the miasma ‘bad air’ theory then held to explain the diffusion of the disease through the atmosphere. Another major epidemic in 1849 provided the backdrop for his writing the groundbreaking On the Mode of Communication of Cholera.

The life cycle environmental impacts of cellulose-supported solid ionic liquids are estimated in comparison with a range of other CO2 sorbents.

Telecommunication is a very powerful vehicle of the Information Age. It is like the spaceship that has taken us on exciting odysseys through weird and wonderful territories. It has shrunken the global boundaries and has given us the feeling of living in a global village. It has literally knocked down barriers of classroom walls, distance, language, time, culture, and has extended our learning arena into the real world. In this article I will briefly share some of the telecommunication projects that my students and I have been involved in. Our telecommunication experiences in a way have been like cooking. Just as in cooking sometimes one follows a recipe and at other times one is creative and does one's own thing. Similarly sometimes we have participated in existing projects and at other times I have initiated my own.

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Dates of first flowering of plants and spring arrivals of birds were recorded at five locations in boreal Canada in 1971-75.The data were compared to establish the phenological sequence of the years and to correlate this with seasonal temperature (accumulated degree-days above 42°F).Correlations were poor, and of little if any predictive value.

Extensive abinitio molecular orbital calculations on six sulfonyl radicals (XSO2 where X = H, CH3, NH2, OH, F, and Cl), the simplest sulfinic acid HSO2H3 and its isomeric sulfone H2SO2, the HSO2− anion of sulfinic acid, the isomeric anion SO2H−, and for completeness, the SO2H radical are presented. By use of the STO-3G* basis set, which includes d-type polarization functions on second-row atoms, all geometrical parameters are varied until the total energy is minimized, subject only to certain symmetry restrictions specified for each system. The inclusion of d orbitals on S is observed to affect the S—O bond lengths by as much as 0.45 Å. The calculations suggest that the radical site in sulfonyl radicals is significantly delocalized over the entire functional group and that the geometrical parameters of the SO2 functional group in sulfonyl radicals are nearly independent of the substituent (r(S—O) = 1.47 ± 0.01 Å, < OSO = 123 ± 2°). Estimates of the X—S bond energy in CH3SO2, NH2SO2, and OHSO2 are consistent with the chemistry of alkylsulfonyl and aminosulfonyl radicals and lead to an interesting prediction for alkoxylsulfonyl radicals. Furthermore the calculations yield lower total energies for HSO2H, HSO2−, and SO2H than for the respective isomeric forms H2SO2, SO2H−, and HSO2.

Journal Article THOMAS CHURCHYARD Get access W. H. CHALLEN W. H. CHALLEN 108 Sackville Road, Worthing Search for other works by this author on: Oxford Academic Google Scholar Notes and Queries, Volume 8, Issue 8, August 1961, Pages 309-d–309, https://doi.org/10.1093/nq/8-8-309d Published: 01 August 1961