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Binding anions using simple neutral molecules
No full textThis thesis reports a number of novel neutral, hydrogen bond donating anion receptors and describes their anion coordination properties in both the solution and solid states. A set of ten urea/thiourea linked indole/carbazole groups were found to have high affinities for a variety of oxo-anions in highly competitive DMSO solutions. Of these receptors, the diindolylurea motif was found to be excellent for the binding of dihydrogen phosphate. This group of receptors were found to form 1:1 complexes in solution with various anions but more complex 2:1 and 3:1 receptor:anion complexes were observed in the solid state. Deprotonation of the bound protonated oxo-anion was observed with these 2:1 and 3:1 complexes. The basic diindolylurea motif was then extended by the incorporation of further NH bond donor groups from amide, indole and carbazole functionalities. This group of receptors were found to form 1:1 complexes in both the solution and solid states, with the binding mode dependent of the geometry of the anion. These compounds also showed spontaneous crystallisation with sulfate in as little as 20 minutes. These receptors showed high affinities for the oxo-anions and gave the first examples of solution state deprotonation of bound protonated oxo-anions. A set of three dimensional indole-based receptors was also synthesised, utilising the TREN and pin-wheel scaffolds. These receptors contain between six and fifteen NH bond donor groups that give a range of anion binding modes, some too complex to be defined, that generally show a preference for the oxo-anions. Again, an example of deprotonation of the bound protonated oxo-anion was observe
Djadjiling Rockshelter: 35,000 ¹⁴C Years of Aboriginal Occupation in the Pilbara, Western Australia
Get PDFThe Pleistocene settlement of the arid zone is a prominent research theme in Australian archaeology (Hiscock 2008:45- 62; Hiscock and Wallis 2004; Marwick 2002a, 2002b; O’Connor et al. 1998; Smith 1987, 2005; Thorley 1998; Veth 1993, 1995, 2005). Of particular interest is the inland Pilbara region of the western arid zone, which until recently was reported to have been first occupied between c.20,000 BP and c.26,000 BP (Brown 1987:27; Edwards and Murphy 2003:45; Maynard 1980:7). The recent test excavations at Juukan-1 rockshelter suggest the region was occupied before 32,920±270 BP (Slack et al. 2009:34). Our research at Djadjiling rockshelter supports this result by demonstrating an Aboriginal presence at the site c.35,000 years ago. Not only is the site unique for its antiquity, but excavations have recovered a large flaked stone assemblage from the earliest occupational phase. The evidence demonstrates repeated early site use, and a sequence of intermittent occupation throughout the late Pleistocene and Holocene. The preliminary findings are presented below
[Stammbuch D. C. D. Behr] / D. C. D. Behr
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Besitzvermerk mit Widmung (8)
Einträge S. 27 - 159 (11)
Einträge S. 160 - 272 (46)
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Charles B. Moore Family papers, 1832-1917
No full textLetter from Mr. and Mrs. D. C. Constant, describing divisions of Union and Confederate loyalty amongst friends and neighbors and their own story of being refugees. In addition, their crops are doing well but there aren't enough laborers to work the fields
The neighbourhood effects of geographical access to tobacco retailers on individual smoking behaviour
Get PDFObjective: To investigate whether neighbourhood measures of geographical accessibility to outlets selling tobacco (supermarkets, convenience stores and petrol stations) are associated with individual smoking behaviour in New Zealand.Methods: Using Geographical Information Systems, travel times from the population-weighted centroid of each neighbourhood to the closest outlet selling tobacco were calculated for all 38,350 neighbourhoods across New Zealand. These measures were appended to the 2002/03 New Zealand Health Survey; a national survey of 12,529 adults. Two-level logistic regression models were fitted to examine the effects of neighbourhood locational access upon individual smoking behaviour after controlling for potential individual- and neighbourhood-level confounding factors, including deprivation and urban/rural status.Results: After controlling for individual-level demographic and socioeconomic variables, individuals living in the quartiles of neighbourhoods with the best access to supermarkets (OR1.23, 95% CI 1.06-1.42) and convenience stores (OR 1.19, 95% CI 1.03-1.38) had a higher odds of smoking compared to individuals in the worst access quartiles. However, theassociation between neighbourhood accessibility to supermarkets and convenience stores was not apparent once other neighbourhood-level variables (deprivation and rurality) were included.Conclusions: At the national level, there is little evidence to suggest that after adjustment for neighbourhood deprivation better locational access to tobacco retail provision in New Zealand is associated with individual-level smoking behaviour
Lettre de C. D.
No full textD. C. Lettre de C. D.. In: Sorcières : les femmes vivent, n°12, 1978. Théorie. p. 63
Lettre de C. D.
No full textD. C. Lettre de C. D.. In: Sorcières : les femmes vivent, n°12, 1978. Théorie. p. 63
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
Get PDFBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
D. C. Kretschmer and Fred Stewart
No full text"SX 29081 Spr. D. C. Kretschmer 6 A.A.T. Coy. RAE. IAF. SX 32927 Fred Stewart 6.A.A.T. Coy. RAE. AIF."SX 29081 Sapper D. C. Kretschmer. 6th Anti Aircraft Tank Company. Royal Australian Engineers. Australian Imperial Forces. SX 32927 Fred Stewart 6th Anti Aircraft Tank Company. Royal Australian Engineers. Australian Imperial Forces
Letter from C. D. Dawson, Tusayan Copper Mining and Smelting, to Carl Hayden
No full textLetter from C. D. Dawson to Carl Hayden urging him to consider the rights of miners and farmers when drawing up the boundaries for the proposed park
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